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List Of Roman Emperors

List of Roman Emperors

This is a list of Roman Emperors with the dates they controlled the Roman Empire. Note that in the list below Julius Caesar is not mentioned as an Emperor, as conventionally he is not considered as such. For a more in-depth discussion of whether or not Julius Caesar might have been considered as the first Emperor, see Roman Emperor. For the worship of the Roman Emperor as a god, see imperial cult. For a simplified list see: Concise List of Roman Emperors italics: claimant who cannot be considered to have ruled, or who held power over part of the empire only
bold: nickname by which the individual is commonly known

The Principate

Julio-Claudian dynasty

Reign Common name Personal name & Title
at birth/
on eve of accession
Imperial name Notes
16 January 27 BC to 19 August AD 14 Augustus GAIVS OCTAVIVS
GAIVS IVLIVS CAESAR OCTAVIANVS
IMPERATOR CAESAR DIVI FILIVS
IMPERATOR CAESAR DIVI FILIVS AVGVSTVS 12BC: Pontifex Maximus
19 August 14 to 16 March 37 Tiberius TIBERIVS CLAVDIVS NERO
TIBERIVS IVLIVS CAESAR
TIBERIVS CAESAR AVGVSTVS AD15: Pontifex Maximus
18 March 37 to 24 January 41 Caligula GAIVS IVLIVS CAESAR GERMANICVS
GAIVS CAESAR AVGVSTVS GERMANICVS CALIGVLA
GAIVS CAESAR AVGVSTVS GERMANICVS Nickname Caligula, (Little-boots); AD37: Pontifex Maximus, Pater Patriae;
Assassinated
24 January 41 to 13 October 54 Claudius TIBERIVS CLAVDIVS DRVSVS
TIBERIVS CLAVDIVS DRVSVS NERO GERMANICVS
TIBERIVS CLAVDIVS CAESAR AVGVSTVS GERMANICVS PONTIFEX MAXIMVS AD42: Pater Patriae;
Assassinated by poisoning
October 54 to 11 June 68 Nero LVCIVS DOMITIVS AHENOBARBVS NERO CLAVDIVS CAESAR DRVSVS GERMANICVS
NERO CLAVDIVS CAESAR AVGVSTVS GERMANICVS
AD55: Pontifex Maximus; later Pater Patriae;
Committed suicide

Year of the four emperors

Reign Common name Personal name & Title
at birth/
on eve of accession
Imperial name Notes
8 June 68 to 15 January 69 Galba SERVIVS SVLPICIVS GALBA SERVIVS GALBA IMPERATOR CAESAR AVGVSTVS Murdered by Otho;
see: Year of the four emperors
15 January 69 to 16 April 69 Otho MARCVS SALVIVS OTHO IMPERATOR MARCVS OTHO CAESAR AVGVSTVS Committed suicide;
see: Year of the four emperors
2 January 69 to 20 December 69 Vitellius AVLVS VITELLIVS AVLVS VITELLIVS GERMANICVS IMPERATOR AVGVSTVS Co-emperor; murdered in the Forum;
see: Year of the four emperors

Flavian Dynasty

Reign Common name Personal name & Title
at birth/
on eve of accession
Imperial name Notes
1 July 69 to 24 June 79 Vespasian TITVS FLAVIVS VESPASIANVS IMPERATOR VESPASIANVS CAESAR AVGVSTVS AD70: Pontifex Maximus Pater Patriae
co-emperor;
see: Year of the four emperors
24 June 79 to 13 September 81 Titus TITVS FLAVIVS VESPASIANVS
TITVS CAESAR VESPASIANVS
IMPERATOR TITVS CAESAR VESPASIANVS AVGVSTVS AD70: Pontifex Maximus Pater Patriae
from August 69
IMPERATOR TITVS CAESAR VESPASIANVS AVGVSTVS
14 September 81 to 18 September 96 Domitian TITVS FLAVIVS DOMITIANVS
CAESAR DOMITIANVS
IMPERATOR CAESAR DOMITIANVS AVGVSTVS, PONTIFEX MAXIMVS PATER PATRIAE lateAD83: Germanicus;
assassinated

Nervan-Antonian dynasty - Five Good Emperors

Reign Common name Personal name & Title
at birth/
on eve of accession
Imperial name Notes
18 September 96 to 27 January 98 Nerva MARCVS COCCEIVS NERVA IMPERATOR NERVA CAESAR AVGVSTVS, PATER PATRIAE  
28 January 98 to 7 August 117 Trajan MARCVS VLPIVS NERVA TRAIANVS
MARCVS VLPIVS NERVA TRAIANVS GERMANICVS
IMPERATOR CAESAR DIVI NERVAE FILIVS NERVA TRAIANVS GERMANICVS AVGVSTVS AD98: Pater Patriae; 102: Dacicus; 114: Parthicus; Aug/Sep 114: Optimus
11 August 117 to 10 July 138 Hadrian PVBLIVS AELIVS HADRIANVS
PVBLIVS AELIVS TRAIANVS HADRIANVS
IMPERATOR CAESAR TRAIANVS HADRIANVS AVGVSTVS PONTIFEX MAXVMVS  
10 July 138 to 7 March 161 Antoninus Pius TITVS AVRELIVS FVLVVS BOIONIVS ARRIVS ANTONINVS
IMPERATOR TITVS AELIVS CAESAR ANTONINVS
IMPERATOR CAESAR TITVS AELIVS HADRIANVS ANTONINVS AVGVSTVS PONTIFEX MAXIMVS post7 March 161: Pius; 139: Pater Patriae
143 Acclaimed emperor a second time
7 March 161 to 17 March 180 Marcus Aurelius MARCVS ANNIVS VERVS
AVRELIVS CAESAR AVGVSTI PII FILIVS
IMPERATOR CAESAR MARCVS AVRELIVS ANTONINVS AVGVSTVS PONTIFEX MAXIMVS co-emperor with Lucius Verus to March 169; 164: Armeniacus Medicus Parthicus Maximus; 166: Pater Patriae; 172: Germanicus; 175: Sarmaticus
7 March 161 to March 169 Lucius Verus LVCIVS CEIONIVS COMMODVS
LVCIVS AELIVS AVRELIVS COMMODVS
IMPERATOR CAESAR LVCIVS AVRELIVS VERVS AVGVSTVS Co-emperor with Marcus Aurelius164: Armeniacus; 165: Parthicus Maximus; 166: Medicus, Pater Patriae
175 Avidius Cassius GAIVS AVIDIVS CASSIVS   Usurper; proclaimed emperor: ruled in Egypt and Syria; murdered by a centurion
177 to 31 December 192 Commodus LVCIVS AVRELIVS COMMODVS ANTONINVS
LVCIVS AVRELIVS COMMODVS CAESAR ANTONINVS
IMPERATOR CAESAR LVCIVS AVRELIVS COMMODVS AVGVSTVS PATER PATRIAE Co-emperor with Marcus Aurelius to 17 March 180;
Murdered: strangled by a wrestler
from 180 IMPERATOR CAESAR LVCIVS AVRELIVS COMMODVS ANTONINVS AVGVSTVS PONTIFEX MAXIMVS PATER PATRIAE Sole emperor

Severan Dynasty, African, Asian and Syrian Emperors

Reign Common name Personal name & Title
at birth/
on eve of accession
Imperial name Notes
1 January 193 to 28 March 193 Pertinax PVBLIVS HELVIVS PERTINAX IMPERATOR CAESAR PVBLIVS HELVIVS PERTINAX AVGVSTVS recognized as emperor by Septimius Severus; murdered by soldiers on the Palatine
28 March 193 to 1 June 193 Didius Julianus MARCVS DIDIVS SEVERVS IVLIANVS IMPERATOR CAESAR MARCVS DIDIVS SEVERVS IVLIANVS AVGVSTVS Sentenced to death by the Senate; murdered on the Palatine
9 April 193 to 4 February 211 Septimius Severus LVCIVS SEPTIMVS SEVERVS IMPERATOR CAESAR LVCIVS SEPTIMVS SEVERVS PERTINAX AVGVSTVS PROCONSVL 9 June 193: Pontifex Maximus; late193: Pater Patriae; 195: Divi Marci Pii filius Divi Commodi Frater; Pius; Arabicus, Adiabenicus; 198: Parthicus Maximus; 209/210: Britannicus Maximus
193 to 194/195 Pescennius Niger GAIVS PESCENNIVS NIGER   Claimant: emperor in Syria
193/195 to 197 Clodius Albinus DECIMVS CLODIVS SEPTIMIVS ALBINVS   Claimant: emperor in Britain
198 to 4 April 217 Caracalla LVCIVS SEPTIMIVS BASSIANVS
CARACALLA
IMPERATOR CAESAR MARCVS AVRELIVS SEVERVS ANTONINVS PIVS AVGVSTVS 199: Pater Patriae; 200: Pius Felix; 209/210: Britannicus Maximus
4 February 211 to 8 February 217 IMPERATOR CAESAR MARCVS AVRELIVS ANTONINVS AVGVSTVS PATER PATRIAE BRITANNICVS MAXIMVS PROCONSVL 213: Germanicus Maximus;
Murdered by Macrinus
209 to 4 February 211 Geta PVBLIVS SEPTIMVS GETA   Murdered by Caracalla
4 February 211 to December 211 IMPERATOR CAESAR PVBLIVS SEPTIMIVS GETA AVGVSTVS
11 April 217 to June 218 Macrinus MARCVS OPELLIVS MACRINVS IMPERATOR MARCVS OPELLIVS SEVERVS MACRINVS AVGVSTVS PIVS FELIX PROCONSVL ?June 217: Pater Patriae; Pontifex Maximus;
Executed
May 217 to June 218 Diadumenian MARCVS OPELLIVS DIADVMENIANVS IMPERATOR MARCVS OPELLIVS ANTONINVS DIADVMENIANVS CAESAR SEVERVS Executed
June 218 to 222 Elagabalus VARIVS AVITVS BASSIANVS
MARCVS AVRELIVS ANTONINVS
ELAGABALVS
IMPERATOR MARCVS AVRELIVS ANTONINVS PIVS FELIX AVGVSTVS PROCONSVL July 218: Pater Patriae, Pontifex Maximus; 220: Sacerdos Amplissimus Dei Invicti Solis Elagabali
Assassinated
13 March 222 to ?March 235 Alexander Severus BASSIANVS ALEXIANVS IMPERATOR CAESAR MARCVS AVRELIVS SEVERVS ALEXANDER PIVS FELIX AVGVSTVS Pontifex Maximus
Assassinated

Crisis of the Third Century

Emperors during the height of the Crisis

Reign Common name Personal name & Title
at birth/
on eve of accession
Imperial name Notes
February/March 235 to March/April 238 Maximinus Thrax GAIVS IVLIVS VERVS MAXIMINVS THRAX IMPERATOR CAESAR GAIVS JVLIVS VERVS MAXIMINVS PIVS FELIX INVICTVS AVGVSTVS Murdered by troops
earlyJanuary/March 238 to lateJanuary/April 238 Gordian I MARCVS ANTONIVS GORDIANVS IMPERATOR CAESAR MARCVS ANTONIVS GORDIANVS SEMPRONIANVS AFRICANVS Committed suicide
earlyJanuary March 238 to lateJanuary/April 238 Gordian II NARCYS ANTONIVS GORDIANVS IMPERATOR CAESAR MARCVS ANTONIVS GORDIANVS SEMPRONIANVS AFRICANVS Killed in battle
earlyFebruary 238 to earlyMay 238 Pupienus Maximus MARCVS CLODIVS PVPIENVS MAXIMVS IMPERATOR CAESAR MARCVS CLODIVS PVPIENVS MAXIMVS AVGVSTVS Murdered by the Praetorians
earlyFebruary 238 to earlyMay 238 Balbinus DECIMVS CAELIVS ANTONIVS BALBINVS
DECIMVS CAELIVS CALVINVS BALBINVS
  Murdered by the Praetorians
May 238 to February 244 Gordian III MARCVS ANTONIVS GORDIANVS
MARCVS ANTONIVS GORDIANVS PIVS
IMPERATOR CAESAR MARCVS ANTONIVS GORDIANVS PIVS FELIX AVGVSTVS Murdered
240 Sabinianus     Proclaimed himself emperor; defeated in battle
February 244 to September/October 249 Philip the Arab MARCVS IVLIVS PHILLIPVS IMPERATOR CAESAR MARCVS IVLIVS PHILLIPVS PIVS FELIX INVICTVS AVGVSTVS Killed in battle by Decius
248 Pacantius TIBERIVS CLAVDIVS MARINVS PACATIANVS   Proclaimed himself emperor; murdered by his own soldiers
248 Jotapian MARCVS FVLVIVS RVFVS IOTAPIANVS   Claimant
248 Silbannacus     Usurper
249 to June 251 Decius GAIVS MESSIVS QVINTVS TRAIANVS DECIVS IMPERATOR CAESAR GAIVS MESSIVS QVINTVS TRAIANVS DECIVS PIVS FELIX INVICTVS AVGVSTVS Killed in battle
249 to 252 Priscus GAIVS JVLIVS PRISCVS   Proclaimed himself emperor in the Eastern provinces
250 Licinianus IVLIVS VALENS LICINIANVS   Claimant
early251 to 1 July 251 Herennius Etruscus QVINTVS HERENNIVS ETRVSCVS MESSIVS DECIVS IMPERATOR CAESAR QVINTVS HERENNIVS ETRVSCVS MESSIVS DECIVS AVGVSTVS Killed in battle
251 Hostilian CAIVS VALENS HOSTILIANVS MESSIVS QVINTVS IMPERATOR CAESAR CAIVS VALENS HOSTILIANVS MESSIVS QVINTVS AVGVSTVS Co-emperor with Gallus, died of the plague
June 251 to August 253 Gallus GAIVS VIBIVS TREBONIANVS GALLVS IMPERATOR CAESAR GAIVS VIBIVS TREBONIANVS GALLVS PIVS FELIX INVICTVS AVGVSTVS Murdered by his own soldiers
July 251 to August 253 Volusianus GAIVS VIBIVS VOLVSIANVS IMPERATOR CAESAR GAIVS VIBIVS AFINIVS GALLVS VELDVMNIANVS VOLVSIANVS AVGVSTVS Son and co-ruler of Trebonianus Gallus. Murdered by his own soldiers
August 253 to October 253 Aemilian MARCVS AEMILIVS AEMILIANVS IMPERATOR CAESAR MARCVS AEMILIVS AEMILIANVS PIVS FELIX INVICTVS AVGVSTVS Murdered by his own soldiers
253 to June 260 Valerian PVBLIVS LICINIVS VALERIANVS IMPERATOR CAESAR PVBLIVS LICINIVS VALERIANVS PIVS FELIX INVICTVS AVGVSTVS Co-emperor with Gallienus; captured by Persians: died in captivity
253 to September 268 Gallienus PVBLIVS LICINIVS EGNATIVS GALLIENVS IMPERATOR CAESAR PVBLIVS LICINIVS EGNATIVS GALLIENVS PIVS FELIX INVICTVS AVGVSTVS Co-emperor with Valerian 253 to 260; murdered
260 Saloninus PVBLIVS LICINIVS CORNELIVS SALONINVS IMPERATOR CAESAR CORNELIVS LICINIVS SALONINVS VALERIANVS PIVS FELIX INVICTVS AVGVSTVS Co-emperor with Gallienus; murdered
258 or June 260 Ingenuus     Proclaimed himself emperor
260 Regalianus     Proclaimed emperor
260 to 261 Macrianus Major FVLVIVS MACRIANVS   Proclaimed emperor; defeated and killed in battle
260 to 261 Macrianus Minor TITVS FVLVIVS IVNIVS MACRIANVS   Proclaimed emperor; defeated and killed in battle
260 to 261 Quietus TITVS FVLVIVS IVNIVS QVIETVS   Claimant
261 to 261 or 262 Mussius Aemilianus LVCIVS MVSSIVS AEMILIANVS   Proclaimed emperor
268 to 268 Aureolus     Proclaimed himself emperor; surrendered to Claudius II Gothicus

Gallic Empire 260 to 274

Reign Common name Personal name & Title
at birth/
on eve of accession
Imperial name Notes
260 to 268 Postumus MARCVS CASSIANIVS LATINIVS POSTVMVS IMPERATOR CAESAR MARCVS CASSIANVS LATINIVS POSTVMVS PIVS FELIX INVICTVS AVGVSTVS
269 Laelianus VLPIVS CORNELIVS LAELIANVS IMPERATOR CAESAR GAIVS VLPIVS CORNELIVS LAELIANVS PIVS FELIX AVGVSTVS Proclaimed himself emperor of the Gallic Empire
269 Marius MARCVS AVRELIVS MARIVS IMPERATOR CAESAR MARCVS AVRELIVS MARIVS PIVS FELIX AVGVSTVS  
269 to 271 Victorinus MARCVS PIAVONIVS VICTORINVS IMPERATOR CAESAR MARCVS PIAVONIVS VICTORINVS PIVS FELIX INVICTVS AVGVSTVS  
270 to 271 Domitianus     Proclaimed emperor of the Gallic Empire
271 to 274 Tetricus I CAIVS PIVS ESVVIVS TETRICVS IMPERATOR CAESAR GAIVS PIVS ESVVIVS TETRICVS FELIX INVICTVS AVGVSTVS  

Illyrian Emperors

Reign Common name Personal name & Title
at birth/
on eve of accession
Imperial name Notes
268 to August 270 Claudius II Gothicus MARCVS AVRELIVS VALERIVS CLAVDIVS IMPERATOR CAESAR MARCVS AVRELIVS CLAVDIVS PIVS FELIX INVICTVS AVGVSTVS Died of plague
August 270 to September 270 Quintillus MARCVS AVRELIVS QVINTILLVS IMPERATOR CAESAR MARCVS AVRELIVS CLAVDIVS QVINTILLVS INVICTVS PIVS FELIX AVGVSTVS Briefly Co-emperor with Aurelian; committed suicide
August 270 to 275 Aurelian LVCIVS DOMITIVS AVRELIANVS IMPERATOR CAESAR LVCIVS DOMITIVS AVRELIANVS PIVS FELIX INVICTVS AVGVSTVS Murdered by the Praetorian Guard
271 Septimius     Proclaimed emperor in Dalmatia; killed by his own soldiers
November/December 275 to July 276 Tacitus MARCVS CLAVDIVS TACITVS IMPERATOR CAESAR MARCVS CLAVDIVS TACITVS PIVS FELIX AVGVSTVS Murdered
July 276 to September 276 Florianus MARCVS ANNIVS FLORIANVS PIVS IMPERATOR CAESAR MARCVS ANNIVS FLORIANVS PIVS FELIX AVGVSTVS Murdered
July 276 to lateSeptember 282 Probus MARCVS AVRELIVS EQVITIVS PROBVS IMPERATOR CAESAR MARCVS AVRELIVS PROBVS PIVS FELIX INVICTVS AVGVSTVS Murdered by his own soldiers
280 Saturninus IVLIVS SATVRNINVS   Claimant: forced by his soldiers; proclaimed himself emperor; killed by his soldiers
280 Proculus     Claimant: acceding to the request of the people of Lugdunum; killed by Probus
280 Bonosus GALLVS QVINTVS BONOSVS   Proclaimed himself emperor; defeated by Probus and committed suicide
September 282 to July/August 283 Carus MARCVS AVRELIVS NVMERIVS CARVS IMPERATOR CAESAR MARCVS AVRELIVS CARVS PIVS FELIX INVICTVS AVGVSTVS Uncertain cause of death; disease, lightning injury, a wound received in battle against the Huns and murder by the Praetorian Guard have all been suggested
spring 283 to summer 285 Carinus MARCVS AVRELIVS CARINVS IMPERATOR CAESAR MARCVS AVRELIVS CARINVS PIVS FELIX INVICTVS AVGVSTVS Co-emperor with Numerian; Murdered
July/August 283 to November 284 Numerian MARCVS AVRELIVS NVMERIVS NVMERIANVS IMPERATOR CAESAR MARCVS AVRELIVS NVMERIANVS PIVS FELIX AVGVSTVS Co-emperor with Carinus

Tetrarchies, unifications and new splits

Dominate

Reign Common name Personal name & Title
at birth/
on eve of accession
Imperial name Notes
20 November 284 to 1 May 305 Diocletian DIOCLES
(full name not known)
GAIVS AVRELIVS VALERIVS DIOCLETIANVS IOVIVS
IMPERATOR CAESAR GAIVS AVRELIVS VALERIVS DIOCLETIANVS PIVS FELIX INVICTVS AVGVSTVS PONTIFEX MAXIMVS PATER PATRIAE PROCONSVL Co-emperor with Maximian; 285: Germanicus Maximus, Sarmaticus Maximus; 286: Iovius; 287: Germanicus Maximus; 295: Persicus Maximus; 297: Britannicus Maximus, Carpicus Maximus; 298: Armenicus Maximus, Medicus Maximus, Adiabenicus Maximus
Abdicated
1 April 286 to 1 May 305 Maximian MAXIMIANVS
(full name not known)
MARCVS AVRELIVS VALERIVS MAXIMIANVS HERCVLIVS
IMPERATOR CAESAR GAIVS AVRELIVS VALERIVS MAXIMIANVS PIVS FELIX INVICTVS AVGVSTVS co-emperor with Diocletian; 286: Germanicus Maximus, Sarmaticus Maximus; 287: Iovius; 288: Germanicus Maximus; 294: Persicus Maximus; 298: Britannicus Maximus, Carpicus Maximus; 299: Armenicus Maximus, Medicus Maximus, Adiabenicus Maximus;
Forced to abdicate
1 May 305 to 25 July 306 Constantius I Chlorus FLAVIVS VALERIVS CONSTANTIVS
CHLORVS
IMPERATOR CAESAR GAIVS FLAVIVS VALERIVS CONSTANTIVS AVGVSTVS  
1 May 305 to May 311 Galerius CAIVS GALERIVS VALERIVS MAXIMIANVS IMPERATOR CAESAR GALERIVS VALERIVS MAXIMIANVS PIVS FELIX INVICTVS AVGVSTVS co-emperor with Severus II
August 306 to 16 September 307 Severus II FLAVIVS VALERIVS SEVERVS IMPERATOR SEVERVS PIVS FELIX AVGVSTVS co-emperor with Galerius
28 October 306 to 28 October 312 Maxentius MARCVS AVRELIVS VALERIVS MAXENTIVS MARCVS AVRELIVS VALERIVS MAXENTIVS PIVS FELIX INVICTVS AVGVSTVS Drowned on order of Constantine I The Great
307 to 308 Maximian MAXIMIANVS
(full name not known)

MARCVS AVRELIVS VALERIVS MAXIMIANVS HERCVLIVS
IMPERATOR CAESAR GAIVS AVRELIVS VALERIVS MAXIMIANVS PIVS FELIX INVICTVS AVGVSTVS PONTIFEX MAXIMVS HERCVLIVS GERMANICVS MAXIMVS SARMATICVS MAXIMVS IOVIVS GERMANICVS MAXIMVS PERSICVS MAXIMVS BRITANNICVS MAXIMVS CARPICVS MAXIMVS ARMENICVS MAXIMVS MEDICVS MAXIMVS ADIABENICVS MAXIMVS Abdicated
307 to 22 May 337 Constantine I The Great GAIVS FLAVIVS VALERIVS CONSTANTINVS IMPERATOR CAESAR FLAVIVS CONSTANTINVS PIVS FELIX INVICTVS AVGVSTVS PONTIFEX MAXIMVS PATER PATRIAE PROCONSVL 307: Germanicus Maximus; 312: Maximus; 323: Sarmaticus Maximus; 324: Victor substituting Invictus; 328: Gothicus Maximus; 336:Dacicus Maximus
308 Domitius Alexander LVCIVS DOMITIVS ALEXANDER   Proclaimed himself emperor
11 November 308 to 19 December 324 Licinius VALERIVS LICINIANVS LICINIVS IMPERATOR CAESAR GAIVS VALERIVS LICINIVS PIVS FELIX INVICTVS AVGVSTVS Co-emperor; abdicated; (executed early 325)
1 May 310 to July/August 313 Maximinus Daia DAIA
MAXIMINVS GAIVS GALERIVS VALERIVS
IMPERATOR CAESAR GALERIVS VALERIVS MAXIMINVS PIVS FELIX AVGVSTVS Co-emperor; committed suicide
337 to 340 Constantine II FLAVIVS CLAVDIVS CONSTANTINVS IMPERATOR CAESAR FLAVIVS VALERIVS CONSTANTINVS AVGVSTVS Co-emperor; killed in battle
337 to 361 Constantius II FLAVIVS IVLIVS CONSTANTIVS IMPERATOR CAESAR FLAVIVS IVLIVS CONSTANTIVS AVGVSTVS Co-emperor
337 to 350 Constans FLAVIVS IVLIVS CONSTANS IMPERATOR CAESAR FLAVIVS IVLIVS CONSTANS AVGVSTVS Co-emperor; killed by Magnentius
January 350 to 11 August 353 Magnentius FLAVIVS MAGNVS MAGNENTIVS IMPERATOR CAESAR FLAVIVS MAGNVS MAGENTIVS AVGVSTVS Co-ruler; committed suicide
c.350 Vetriano     Proclaimed himself emperor
c.350 Nepotianus     Proclaimed himself emperor
November 361 to June 363 Julian the Apostate Julian the Apostate IMPERATOR CAESAR FLAVIVS CLAVDIVS IVLIANVS AVGVSTVS Killed in battle
363 to 17 February 364 Jovian FLAVIVS IOVIANVS IMPERATOR CAESAR FLAVIVS IOVIANVS AVGVSTVS Died accidentally

Valentinian Dynasty

Reign Common name Personal name



Roman Empire

:For other uses, see Roman Empire (disambiguation) The Roman Empire is the term conventionally used to describe the Ancient Roman polity in the centuries following its reorganization under the leadership of Octavian (better known as Caesar Augustus), until its radical reformation in what was later to be known as the Byzantine Empire. Roman Empire is also used as translation of the expression Imperium Romanum, probably the best known Latin expression where the word "imperium" is used in the meaning of a territory, the "Roman Empire", as that part of the world where Rome ruled. The expansion of this Roman territory beyond the borders of the initial city-state of Rome had started long before the state organisation turned into an Empire. One of the first historians to describe this expansion of the Roman territory was the Greek Polybius, writing in the Epoch of the Roman Republic. In the centuries before the autocracy of Augustus, Rome had already accumulated a collection of tribute-states beyond the Italian Peninsula, including former Mediterranean competitors Syracuse and Carthage. In the late Republic Augustus (then still "Octavian") added Egypt definitively to the Imperium Romanum. The remainder of this article treats the Roman Empire as Imperial state (see Roman Kingdom and Roman Republic for development of the territory in earlier times). Augustus' reforms turning the Roman state into an Empire survived mostly unchanged until the Diocletian reform at end of the 3rd century, which turned the empire into a tetrarchy. While the political form given by Diocletian was short-lived, it led to the division of the Empire into two halves. This allowed Roman rule to continue for two more centuries over the whole empire, although divided into the Eastern and the Western Roman Empire. The end of the Western Empire is traditionally set in 476, when Odovacar deposed the last Emperor and sent the Imperial insignia to Constantinople; henceforth he nominally ruled as dux on behalf of Constantinople. After another millennium, in 1453, the Eastern Empire, better known as the Byzantine Empire, fell to the Ottoman Turks. From Augustus to the Fall of the Western Empire Rome dominated the region of Western Eurasia, comprising over half its population. The Roman Empire's influence on government, law, military, and monumental architecture, as well as many other aspects of Western life remains inescapable. The Greeks adopted the Roman name in the Middle Ages and were known as Romans, a trend that survives until today in Greece, a result of their cultural position (see Names of the Greeks). Roman titles of power were adopted by successor states and other entities with imperial pretensions, including the Frankish kingdom, the Holy Roman Empire, the first and second Bulgarian empires, the Russian/Kiev dynasties, and the German Empire. See also Roman culture.

Historians' viewpoints on the evolution of Imperial Rome

Because the empire of Rome lasted for such a long period of time (31 BC1453), there are certain alternative names used by historians to distinguish various semantic periods or eras. Such names include Byzantine Empire, Eastern Roman Empire and Western Roman Empire, which are used interchangeably throughout this article to mean the same as Roman Empire (or the Western or Eastern part thereof). For many years historians made a distinction between the Principate, the period from Augustus until the Crisis of the Third Century, and the Dominate, the period from Diocletian until the end of the Empire in the West. According to this theory, during the Principate (from the Latin word
princeps, meaning "first citizen", the only title Augustus would permit himself) the realities of dictatorship were concealed behind Republican forms; while during the Dominate (from the word dominus, meaning "Master") imperial power showed its naked face, with golden crowns and ornate imperial ritual. More recently historians established that the situation was far more nuanced: certain historical forms continued until the Byzantine period, more than one thousand years after they were created, and displays of imperial majesty were common from the earliest days of the Empire.

Age of Augustus (31 BC–AD 14)

Political developments

Latin As a matter of convenience, the Roman Empire is held to have begun with the constitutional settlement following the Battle of Actium in 31 BC. In fact the Republican institutions at Rome had been destroyed over the preceding century and Rome had been in continuous crisis with periods of dictatorial rule since Sulla. The long, peaceful and consensual reign of Augustus greatly changed the view toward hereditary monarchy. Rome–the city that had not too long before assassinated its leader, Julius Caesar, when his ambitions seemed to threaten the republic–now placidly accepted one man rule. Augustus' reign was notable for several long-lasting achievements that would define the Empire:
- Creation of an hereditary office, which we refer to as Emperor of Rome.
- Fixation of the payscale. Duration of Roman military service marked the final step in the evolution of the Roman Army from a citizen army to a professional one.
- Creation of the Praetorian Guard, which would make and unmake emperors for centuries.
- Expansion to the natural borders of the Empire. The borders reached upon Augustus' death remained the limits of Empire, with minimal exceptions, for the next four hundred years.
- Development of trade links with regions as far as India and China.
- Creation of a civil service outside of the Senatorial structure, leading to a continuous weakening of Senatorial authority.
- Enactment of the
lex Julia of 18 BC and the lex Papia Poppaea of AD 9, which rewarded childbearing and penalized celibacy.
- Promulgation of the cult of the Deified Julius Caesar throughout the Empire. This tradition of deifying the Emperor upon his death lasted until the time of Constantine, who was made both a Roman god and "the Thirteenth Apostle" upon his death.

Cultural developments

:
Main article: Roman culture The Augustan period saw a tremendous outpouring of cultural achievement in the areas of poetry, history, sculpture and architecture. At the same time, a tremendous outpouring of energy in founding colonies and municipia, unrivalled in Rome before or after, succeeded in Romanizing extensive territories in the East, in Africa, in Hispania and Gaul, beyond those areas that were traditionally within the Roman sphere of influence.

Sources

The Age of Augustus is paradoxically far more poorly documented than the Late Republican period that preceded it. While Livy wrote his magisterial history during Augustus' reign and his work covered all of Roman history through 9 BC, only epitomes survive of his coverage of the Late Republican and Augustan periods. Our important primary sources for this period include the:
- Res Gestae Divi Augusti, Augustus' highly partisan autobiography,
-
Historiae Romanae by Velleius Paterculus, a disorganized work which remains the best annals of the Augustan period, and
-
Controversiae and Suasoriae of Seneca the Elder. Though primary accounts of this period are few, works of poetry, legislation and engineering from this period provide important insights into Roman life. Archeology, including maritime archeology, aerial surveys, epigraphic inscriptions on buildings, and Augustan coinage, has also provided valuable evidence about economic, social and military conditions. Secondary sources on the Augustan Age include Tacitus, Dio Cassius, Plutarch and Suetonius. Josephus' Jewish Antiquities is the important source for Judea in this period, which became a province during Augustus' reign.

Julio-Claudian dynasty: Augustus' heirs

Augustus, leaving no sons, was succeeded by his stepson Tiberius, the son of his wife Livia from her first marriage. Augustus was a scion of the
gens Julia (the Julian family), one of the most ancient patrician clans of Rome, while Tiberius was a scion of the gens Claudia, only slightly less ancient than the Julians. Their three immediate successors were all descended both from the gens Claudia, through Tiberius' brother Nero Claudius Drusus, and from gens Julia, either through Julia Caesaris, Augustus' daughter from his first marriage (Caligula and Nero), or through Augustus' sister Octavia (Claudius). Historians thus refer to their dynasty as "Julio-Claudian".

Tiberius (1437)

The early years of Tiberius' reign were peaceful and relatively benign. Tiberius secured the power of Rome and enriched her treasury. However, Tiberius' reign soon became characterized by paranoia and slander. In 19, he was popularly blamed for the death of his nephew, the popular Germanicus. In 23 his own son Drusus died. More and more, Tiberius retreated into himself. He began a series of treason trials and executions. He left power in the hands of the commander of the guard, Aelius Sejanus. Tiberius himself retired to live at his villa on the island of Capri in 26, leaving administration in the hands of Sejanus, who carried on the persecutions with relish. Sejanus also began to consolidate his own power; in 31 he was named co-consul with Tiberius and married Livilla, the emperor's niece. At this point he was hoist by his own petard: the Emperor's paranoia, which he had so ably exploited for his own gain, was turned against him. Sejanus was put to death, along with many of his cronies, the same year. The persecutions continued until Tiberius' death in 37.

Caligula (3741)

At the time of Tiberius' death most of the people who might have succeeded him had been brutally murdered. The logical successor (and Tiberius' own choice) was his grandnephew, Germanicus' son Gaius (better known as Caligula). Caligula started out well, by putting an end to the persecutions and burning his uncle's records. Unfortunately, he quickly lapsed into illness. The Caligula that emerged in late 37 may have suffered from epilepsy, and was probably insane. He ordered his soldiers to invade Britain, but changed his mind at the last minute and had them pick sea shells on the northern end of France instead. It is believed he carried on incestuous relations with his sisters. He had ordered a statue of himself to be erected in the Temple at Jerusalem, which would have undoubtedly led to revolt had he not been dissuaded. In 41, Caligula was assassinated by the commander of the guard Cassius Chaerea. The only member left of the imperial family to take charge was another nephew of Tiberius', Tiberius Claudius Drusus Nero Germanicus, better known as the emperor Claudius.

Claudius (4154)

Claudius had long been considered a weakling and a fool by the rest of his family. He was, however, neither paranoid like his uncle Tiberius, nor insane like his nephew Caligula, and was therefore able to administer the empire with reasonable ability. He improved the bureaucracy and streamlined the citizenship and senatorial rolls. He also proceeded with the conquest and colonization of Britain (in 43), and incorporated more Eastern provinces into the empire. In Italy, he constructed a winter port at Ostia, thereby providing a place for grain from other parts of the Empire to be brought in inclement weather. On the home front, Claudius was less successful. His wife Messalina cuckolded him; when he found out, he had her executed and married his niece, Agrippina the younger. She, along with several of his freedmen, held an inordinate amount of power over him, and very probably killed him in 54. Claudius was deified later that year. The death of Claudius paved the way for Agrippina's own son, the 16-year-old Lucius Domitius, or, as he was known by this time, Nero.

Nero (5469)

Initially, Nero left the rule of Rome to his mother and his tutors, particularly Lucius Annaeus Seneca. However, as he grew older, his desire for power increased; he had his mother and tutors executed. During Nero's reign, there were a series of riots and rebellions throughout the Empire: in Britain, Armenia, Parthia, and Judaea. Nero's inability to manage the rebellions and his basic incompetence became evident quickly and in 68, even the Imperial guard renounced him. Nero is best remembered by the rumour that he played the lyre and sang during the Great Fire of Rome, and hence "fiddled while Rome burned" (though the fiddle had yet to be invented). Nero is also remembered for his immense rebuilding of Rome following the fires. Nero committed suicide, and the year 69 (known as the Year of the Four Emperors) was a year of civil war, with the emperors Galba, Otho, Vitellius, and Vespasian ruling in quick succession. By the end of the year, Vespasian was able to solidify his power as emperor of Rome.

Flavian Dynasty

The Flavians, although a relatively short lived dynasty, helped restore stability in an empire on its knees. Although there are criticism of all three, especially based on their more centralized style of rule, it was through the reforms and good rule of the three that helped create a stable empire that would last well into the 3rd Century. However, their backgrounds as a military dynasty led to further irrelevancy of the senate, and the move from
princeps, or first citizen, to imperator, or emperor, was finalized during their reign.

Vespasian (6979)

Vespasian was a remarkably successful Roman general who had been given rule over much of the eastern part of the Roman Empire. He had supported the imperial claims of Galba; however, on his death, Vespasian became a major contender for the throne. After the suicide of Otho, Vespasian was able to hijack Rome's winter grain supply in Egypt, placing him in a good position to defeat his remaining rival, Vitellius. On December 20, 69, some of Vespasian's partisans were able to occupy Rome. Vitellius was murdered by his own troops, and the next day, Vespasian was confirmed as Emperor by the Senate. At the age of 60 and battle hardened he was hardly a charismatic emperor, but he turned out to be an excellent ruler none the less. Although Vespasian was considered quite the autocrat by the senate, he mostly continued the weakening of that body that had been going since the reign of Tiberius. This was typified by his dating his accession to power from July 1, when his troops proclaimed him emperor, instead of December 21, when the Senate confirmed his appointment. Another example was his assumption of the censorship in 73, giving him power over who exactly made up the senate. He used that power to expel dissident senators. At the same time, he increased the number of senators from 200, at that low level due to the actions of Nero and the year of crisis that followed, to 1000, most of the new senators coming not from Rome but from Italy and the urban centers within the western provinces. Vespasian was able to liberate Rome from the financial burdens placed upon it by Nero's excesses and the civil wars. To do this, he not only increased taxes, but created new forms of taxation. Also, through his power as censor he was able to carefully examine the fiscal status of every city and province, many paying taxes based upon information and structures more than a century old. Through this sound fiscal policy, he was able to build up a surplus in the treasury and embark on public works projects. It was he who first commissioned the Roman Colosseum; he also built a forum whose centerpiece was a temple to Peace. In addition, he alloted sizable subsidies to the arts, creating a chair of rhetoric at Rome. Vespasian was also an effective emperor for the provinces in his decades of office, having posts all across the empire, both east and west. In the west he gave considerable favoritism to Spain in which he granted Latin rights to over three hundred towns and cities, promoting a new era of urbanization throughout the western (i.e. formerly barbarian) provinces. Through the additions he made to the Senate he allowed greater influence of the provinces in the Senate, helping to promote unity in the empire. He also extended the borders of the empire on every front, most of which was done to help strengthen the frontier defenses, one of Vespasian's main goals. The crisis of 69 had wrought havoc on the army. One of the most marked problems had been the support lent by provincial legions to men who supposedly represented the best will of their province. This was mostly caused by the placement of native auxiliary units in the areas they were recruited in, a practice Vespasian stopped. He mixed auxiliary units with men from other areas of the empire or moved the units away from where they were recruited to help stop this. Also, to further reduce the chances of another military coup he broke up the legions, and instead of placing them in singular concentrations broke them up along the border. Perhaps the most important military reform he undertook was the extension of legion recruitment from exclusively Italy to Gaul and Spain, in line with the Romanization of those areas.

Titus (7981)

Titus, the eldest son of Vespasian, had been groomed to rule. He had served as an effective general under his father, helping to secure the east and eventually taking over the command of Roman armies in Syria and Palestine, quelling the significant Jewish revolt going on at the time. Throughout his father's reign he had been tailored for rule, sharing the consul for several years with his father and receiving the best tutelage. Although there was some trepidation when he took office due to his known dealings with some of the less respectable elements of Roman society, he quickly proved his merit, even recalling many exiled by his father as a show of good faith. However, his short reign was marked by disaster: in 79, Vesuvius erupted in Pompeii, and in 80, a fire decimated much of Rome. His generosity in rebuilding after these tragedies made him very popular. Titus was very proud of his work on the vast amphitheater begun by his father. He held the opening ceremonies in the still unfinished edifice during the year 80, celebrating with a lavish show that featured 100 gladiators and lasted 100 days. Titus died in 81, at the age of 41 of what is presumed to be illness; it was rumored that his brother Domitian murdered him in order to become his successor, although these claims have little merit. Whatever the case, he was greatly mourned and missed.

Domitian (8196)

The Flavians all had rather poor relations with the senate due to their more autocratic style, however Domitian was the only one who truly created significant problems. His continuous control as consul and censor throughout his rule, the former his father sharing in much the same way of his Julio-Claudian forerunners, the latter having difficulty even obtaining, were unheard of. In addition, he often appeared in full military regalia as an imperator, an affront to the idea of what the Principate-era emperor's power was based upon, the emperor as the princeps. His reputation in the Senate aside, he kept the people of Rome happy through various measures, including donations to every resident of Rome, wild spectacles in the newly finished Colosseum, and continuing the public works projects of his father and brother. He also apparently had the good fiscal sense of his father, because although he spent lavishly his successors came to power with a well endowed treasury. However, during the end of his reign Domitian became extremely paranoid which probably had its initial roots in the treatment he received by his father: although given significant responsibility, he was never trusted with anything important without supervision. This flowered into the severe and perhaps pathological repercussions following the short lived rebellion in 89 of Antonius Saturninus, a governor and commander in Germany. Domitian's paranoia led to a large number of arrests, executions, and seizure of property (which might help explain his ability to spend so lavishly). Eventually it got to the point where even his closest advisers and family members lived in fear, leading them to his murder in 96 orchestrated by his enemies in the Senate, Stephanus (the steward of the deceased Julia Flavia), members of the Pretorian Guard and empress Domitia Longina.

The Adoptive Emperors

"Five Good Emperors" (96180)

180 The next century came to be known as the period of the "Five Good Emperors", in which the succession was peaceful though not dynastic and the Empire was prosperous. The emperors of the period were Nerva (9698), Trajan (98117), Hadrian (117138), Antoninus Pius (138161) and Marcus Aurelius (161180), each being adopted by his predecessor as his successor during the latter's lifetime. While their respective choices of successor were based upon the merits of the individual men they selected, many argue the real reason for the lasting success of the adoptive scheme of succession lay more with the fact that none of them had a natural heir. Under Trajan, the Empire's borders briefly achieved their maximum extension with provinces created in Mesopotamia in 117. From 166, Roman embassies to China, first sent under the reign of Antonius Pius and probably traveling on the southern sea route, are recorded in Chinese historical sources such as the Later Han History.

Commodus (180192)

192 world map, indicating "Sinae" (China) at the extreme right, beyond the island of "Trapobane" (Sri Lanka, oversized) and the "Aurea Chersonesus" (South-East Asian peninsula).]] The period of the "five good emperors" was brought to an end by the reign of Commodus from 180 to 192. Commodus was the son of Marcus Aurelius, making him the first direct successor in a century, breaking the scheme of adoptive successors that had turned out so well. He was co-emperor with his father from 177. When he became sole emperor upon the death of his father in 180, it was at first seen as a hopeful sign by the people of the Roman Empire. Nevertheless, as generous and magnanimous as his father was, Commodus turned out to be just the opposite. Commodus is often thought to have been insane, and he was certainly given to excess. He began his reign by making an unfavorable peace treaty with the Marcomanni, who had been at war with Marcus Aurelius. Commodus also had a passion for gladiatorial combat, which he took so far as to take to the arena himself, dressed as a gladiator. In 190, a part of the city of Rome burned, and Commodus took the opportunity to "re-found" the city of Rome in his own honor, as Colonia Commodiana. The months of the calendar were all renamed in his honor, and the senate was renamed as the Commodian Fortunate Senate. The army became known as the Commodian Army. Commodus was strangled in his sleep in 192, a day before he planned to march into the Senate dressed as a gladiator to take office as a consul. Upon his death, the Senate passed
damnatio memoriae on him and restored the proper name to the city of Rome and its institutions. The popular movies The Fall of the Roman Empire (1964) and Gladiator (2000) were loosely based on the career of the emperor Commodus, although they should not be taken as an accurate historical depictions of his life.

Severan dynasty (193235)

The Severan dynasty includes the increasingly troubled reigns of Septimius Severus (193–211), Caracalla (211–217), Macrinus (217–218), Elagabalus (218–222), and Alexander Severus (222–235). The founder of the dynasty, Lucius Septimius Severus, belonged to a leading native family of Leptis Magna in Africa who allied himself with a prominent Syrian family by his marriage to Julia Domna. Their provincial background and cosmopolitan alliance, eventually giving rise to imperial rulers of Syrian background, Elagabalus and Alexander Severus, testifies to the broad political franchise and economic development of the Roman empire that had been achieved under the Antonines. A generally successful ruler, Septimius Severus cultivated the army's support with substantial remuneration in return for total loyalty to the emperor and substituted equestrian officers for senators in key administrative positions. In this way, he successfully broadened the power base of the imperial administration throughout the empire. Abolishing the regular standing jury courts of Republican times, Septimius Severus was likewise able to transfer additional power to the executive branch of the government, of which he was decidedly the chief representative. Septimius Severus' son, Marcus Aurelius Antoninus — nicknamed Caracalla — removed all legal and political distinction between Italians and provincials, enacting the
Constitutio Antoniniana in 212 which extended full Roman citizenship to all free inhabitants of the empire. Caracalla was also responsible for erecting the famous Baths of Caracalla in Rome, their design serving as an architectural model for many subsequent monumental public buildings. Increasingly unstable and autocratic, Caracalla was assassinated by the praetorian prefect Macrinus in 217, who succeeded him briefly as the first emperor not of senatorial rank. The imperial court, however, was dominated by formidable women who arranged the succession of Elagabalus in 218, and Alexander Severus, the last of the dynasty, in 222. In the last phase of the Severan principate, the power of the Senate was somewhat revived and a number of fiscal reforms were enacted. Despite early successes against the Sassanian Empire in the East, Alexander Severus' increasing inability to control the army led eventually to its mutiny and his assassination in 235. The death of Alexander Severus ushered in a subsequent period of soldier-emperors and almost a half-century of civil war and strife.

Crisis of the 3rd Century (235284)

The Crisis of the 3rd Century is a commonly applied name for the crumbling and near collapse of the Roman Empire between 235 and 284. During this period, Rome was ruled by more than 35 individuals, most of them prominent generals who assumed Imperial power over all or part of the empire, only to lose it by defeat in battle, murder, or death. After nearly 50 years of external invasion, internal civil wars and economic collapse, the Empire was on the verge of ending. A series of tough soldier-emperors saved the empire, but in the process fundamentally changed the Roman Empire. The transitions of this period mark the beginnings of Late Antiquity and the end of Classical Antiquity.

Tetrarchy (285324)

324 sacked from a Byzantine palace in 1204, Treasury of St Mark's, Venice]] The transition from a single united empire to the later divided Western and Eastern empires was a gradual transformation. In July, 285, Diocletian defeated rival Emperor Carinus and briefly became sole emperor of the Roman Empire. Diocletian saw that the vast Roman Empire was ungovernable by a single emperor in the face of internal pressures and military threats on two fronts. He therefore split the Empire in half along a north-west axis just east of Italy, and created two equal Emperors to rule under the title of Augustus. Diocletian was Augustus of the eastern half, and gave his long time friend Maximian the title of Augustus in the western half. In 293 authority was further divided as each Augustus took a Caesar to aid him in administrative matters, and to provide a line of succession; Galerius became the junior emperor of Diocletian and Constantius Chlorus the junior emperor of Maximian. This constituted what is called the Tetrarchy (in Greek: the leadership of four) by modern scholars. The system allowed the peaceful succession of the Augusti as the Caesar in each half rose up to replace the Augustus and proclaimed a new Caesar. On May 1, 305 Diocletian and Maximian abdicated in favor of their Caesars. Galerius named the two new Caesars: his nephew Maximinus for himself and Flavius Valerius Severus for Constantius. The Tetrarchy would effectively collapse with the death of Constantius Chlorus on July 25 306. Constantius' troops in Eboracum immediately proclaimed his son Constantine an Augustus. In August, 306, Galerius promoted Severus to the position of Augustus. A revolt in Rome supported another claimant to the same title: Maxentius, son of Maximian, who was proclaimed Augustus on October 28, 306. His election was supported by the Praetorian Guard. This left the Empire with five rulers: four Augusti (Galerius, Constantine, Severus and Maxentius) and a Caesar (Maximinus). The year 307 saw the return of Maximian to the role of Augustus alongside his son Maxentius creating a total of six rulers of the Empire. Galerius and Severus campaigned against them in Italy. Severus was killed under command of Maxentius on September 16, 307. The two Augusti of Italy also managed to ally themselves with Constantine by having Constantine marry Fausta, the daughter of Maximian and sister of Maxentius. The end of 307 saw the Empire with four Augusti (Maximian, Galerius, Constantine and Maxentius) and a sole Caesar (Maximinus). The five were briefly joined by another Augustus in 308, Domitius Alexander, vicarius of the Roman province of Africa under Maxentius, proclaimed himself Augustus. Before long he was captured by Rufius Volusianus and Zenas. Alexander was executed in 311. The current situation of conflict between the various rivalrous Augusti was resolved in the Congress of Carnuntum with the participation of Diocletian, Maximian and Galerius. The final decisions were taken on November 11, 308:
- Galerius remained Augustus of the Eastern Roman Empire.
- Maximinus remained Caesar of the Eastern Roman Empire.
- Maximian was forced to abdicate.
- Maxentius was still not recognized, his rule remained illegitimate.
- Constantine received official recognition but was demoted to Caesar of the Western Roman Empire.
- Licinius replaced Maximian as Augustus of the Western Roman Empire. Problems however continued. Maximinus demanded to be promoted to Augustus. He proclaimed himself to be one on May 1 310; Constantine followed suit shortly after. Maximian similarly proclaimed himself an Augustus for a third and final time. He was killed by his son-in-law Constantine in July, 310. The end of the year again found the Empire with four legitimate Augusti (Galerius, Maximinus, Constantine and Licinius) and one illegitimate one (Maxentius). Galerius died in May 311 leaving Maximinus sole ruler of the Eastern Roman Empire. Meanwhile Maxentius declared a war on Constantine under the pretext of avenging his executed father. He was among the casualties of the Battle of Milvian Bridge on October 28 312. This left the Empire in the hands of the three remaining Augusti, Maximinus, Constantine and Licinius. Licinius allied himself with Constantine, cementing the alliance by marriage to his younger half-sister Constantia in March 313 and joining open conflict with Maximinus. In August 313 Maximinus met his death at Tarsus in Cilicia. The two remaining Augusti divided the Empire again in the pattern established by Diocletian, Constantine becoming Augustus of the Western Roman Empire and Licinius Augustus of the Eastern Roman Empire. This division lasted ten years until 324. A final war between the last two remaining Augusti ended with the deposition of Licinius and the elevation of Constantine to sole Emperor of the Roman Empire. Deciding that the empire needed a new capital, Constantine chose the site of Byzantium for the new city. He refounded it as Nova Roma, but it was popularly called Constantinople: Constantine's City.

Christian Empire (324395)

395 The beginning of the Roman Empire as a Christian empire lies in 313, with the Edict of Milan. The edict was signed under the reigns of Constantine I and Licinius. The edict established tolerance for Christianity throughout the Empire, but did not yet make it the official state religion. After the Edict was proclaimed, however, the Christian Church rapidly became extremely influential amongst the ruling classes of the Empire, and the Bishops were established in positions of power and influence. Christianity became the single official religion of Rome under Theodosius I (r. 379395). The emperor had a considerable degree of control over the church. While Christianity flourished, the Empire by no means became uniformly Christian; paganism remained significant. Theodosius massacred Thessalonica for rebelling against his new Christian policies condemning homosexuality, which was a common practice in both ancient Greece and Greece under Roman rule. Upon his return to Rome the Bishop Ambrose refused to let Theodosius enter the church until he made a public repentance. Theodosius did so, and from then on the church's powers grew. Eventually the church would gain enough power that it would outlast the empire in the west.

Late Antiquity in the West (395476)

476.]] In popular history, the year 476 is generally accepted as the end of the Western Roman Empire. In that year, Odoacer disposed of his puppet Romulus Augustus (475–476), and for the first time did not bother to induct a successor, choosing instead to rule as a representative of the Eastern Emperor (although Julius Nepos, the emperor deposed by Romulus Augustulus, continued to rule Illyricum until his death in 480, at which point Odoacer annexed the remainder of the Western Empire to his Italian kingdom). The last Emperor who ruled from Rome, however, had been Theodosius, who removed the seat of power to Mediolanum (Milan). Edward Gibbon, in writing
The History of the Decline and Fall of the Roman Empire knew not to end his narrative at 476. The great corpse continued to twitch, into the 6th century. On the other hand, in 409, with the Emperor of the West fled from Milan to Ravenna and all the provinces wavering in loyalties, the Goth Alaric I, in charge at Rome, came to terms with the senate, and with their consent set up a rival emperor and invested the prefect of the city, a Greek named Priscus Attalus, with the diadem and the purple robe. In the following year when the Goths rampaged in the City, local power was in the hands of the Bishop of Rome. The transfer of power to Christian pope and military dux had been effected: the Western Empire was effectively dead, though no contemporary knew it. The next seven decades played out as aftermath. Theodoric the Great as King of the Goths, couched his legitimacy in diplomatic terms as being the representative of the Emperor of the East. Consuls were appointed regularly through his reign: a formula for the consular appointment is provided in Cassiodorus' Book VI. The post of consul was last filled in the west by Theodoric's successor, Athalaric, until he died in 534. Ironically the Gothic War in Italy, which was meant as the reconquest of a lost province for the Emperor of the East and a re-establishment of the continuity of power, actually caused more damage and cut more ties of continuity with the Antique world than the attempts of Theodoric and his minister Cassiodorus to meld Roman and Gothic culture within a Roman form. In essence, the "fall" of the Roman Empire to a contemporary depended a great deal on where they were and their status in the world. On the great villas of the Italian Campagna, the seasons rolled on without a hitch. The local overseer may have been representing an Ostrogoth, then a Lombard duke, then a Christian bishop, but the rhythm of life and the horizons of the imagined world remained the same. Even in the decayed cities of Italy consuls were still elected. In Auvergne, at Clermont, the Gallo-Roman poet and diplomat Sidonius Apollinaris, bishop of Clermont, realized that the local "fall of Rome" came in 475, with the fall of the city to the Visigoth Euric. In the north of Gaul the Franks could not be taken for Roman, but in Hispania the last Arian Visigothic king Liuvigild considered himself the heir of Rome. In Alexandria, dreams of a "Christian Empire" with genuine continuity were shattered when a rampaging mob of Christians were encouraged to sack and destroy the Serapeum in 392. Hispania Baetica was still essentially Roman when the Moors came in 711, but in the northwest, the invasion of the Suevi broke the last frail links with Roman culture in 409. In Aquitania and Provence, cities like Arles were not abandoned, but Roman culture in Britain collapsed in waves of violence after the last legions evacuated: the final legionary probably left Britain in 409. In Athens the end came for some in 529, when the Emperor Justinian closed the Neoplatonic Academy and its remaining members fled east for protection under the rule of Sassanid king Khosrau I; for other Greeks it had come long before, in 396, when Christian monks led Alaric I to vandalize the site of the Eleusinian Mysteries.

From Roman to Byzantine in the East

Under Constantine (330337) and his sons (337361)

Constantinople would serve as the capital of Constantine the Great from May 11, 330 to his death on May 22 337. The Empire was parted again among his three surviving sons.The Western Roman Empire was divided among the eldest son Constantine II and the youngest son Constans. The Eastern Roman Empire along with Constantinople were the share of middle son Constantius II. Constantine II was killed in conflict with his youngest brother in 340. Constans was himself killed in conflict with army proclaimed Augustus Magnentius on January 18 350. Magnentius was at first opposed in the city of Rome by self-proclaimed Augustus Nepotianus, a paternal first cousin of Constans. Nepotianus was killed alongside his mother Eutropia. His other first cousin Constantia convinced Vetriano to proclaim himself Caesar in opposition to Magnentius. Vetriano served a brief term from March 1 to December 25 350. He was then forced to abdicate by the legitimate Augustus Constantius. The usurper Magnentius would continue to rule the Western Roman Empire till 353 while in conflict with Constantius. His eventual defeat and suicide left Constantius as sole Emperor. Constantius' rule would however be opposed again in 360. He had named his paternal half-cousin and brother-in-law Julian as his Caesar of the Western Roman Empire in 355. During the following five years, Julian had a series of victories against invading Germanic tribes, including the Alamanni. This allowed him to secure the Rhine frontier. His victorious Gallic troops thus ceased campaigning. Constantius send orders for the troops to be transferred to the east as reinforcements for his own currently unsuccessful campaign against Shapur II of Persia. This order led the Gallic troops to an insurrection. They proclaimed their commanding officer Julian to be an Augustus. Both Augusti were not ready to lead their troops to another Roman Civil War. Constantius' timely demise on November 3, 361 prevented this war from ever occurring.

Under Julian & Jovian (361364)

Julian would serve as the sole Emperor for two years. He had received his baptism as a Christian years before, but apparently no longer considered himself one. His reign would see the ending of restriction and persecution of paganism introduced by his uncle and father-in-law Constantine the Great and his cousins and brothers-in-law Constantine II, Constans and Constantius II. He instead placed similar restrictions and unofficial persecution of Christianity. His edict of toleration in 362 ordered the reopening of pagan temples and the reinstitution of alienated temple properties, and, more problematically for the Christian Church, the recalling of previously exiled Christian bishops. Returning Orthodox and Arian bishops resumed their conflicts, thus further weakening the Church as a whole. Julian himself was not a traditional pagan. His personal beliefs were largely influenced by Neoplatonism and Theurgy; he reputedly believed he was the reincarnation of