Roman Empire
4th Century (301-400 A.D.)


Last update: Aug 31, 2007

Year

Event

301

Diocletion's maximum price edicts go into effect.

303

Diocletion persecutes the Christians in earnest.

305

Diocletian and Maximian abdicate the throne. Galerius and Constantius Chlorus co-Augusti

306

Death of the Emperor Constantius Chlorus in the city of Ebaracum. Constantine named Augustus in the West.

306

Emperor Fl. Valerius Severus revolts and invades Italy. His father Maximian comes out of retirement first in his support, then in favor of Constantine. Severus killed in Pannonia and Maximian recognized as co-emperor.

307

Marcellus is appointed as the new bishop of Rome.

308

The Conference of Carnutum, a meeting of all of the Caesars and Augusti, eventually setting off civil war.

308

The historian and Christian Eusebius is placed as the new bishop of Rome after opposition to Marcellus forces him into exile.

310

Death of Maximian after the siege of Masillia by Constantine.

311

Publication of the Edict of Toleration by the Emperor Galerius, ending Christian persecution, followed shortly by his death. Death of Diocletion.

312

Constantine leads his army from Gaul, investing several towns and winning the support of most of Italy. On the march to Rome, he claimed to have seen the sign of a cross of light, and the words "By this sign, conquer". This is the basis for speculation on Constantine's Christian conversion

312

Death of the emperor Maxentius after Constantine's victory at the battle of the Milvian Bridge. Constantine disbands the Praetorian guard.

313

Victory of Licinius over Maximinus Daia at the Hellespont is followed by reconciliation of Constantine and Maximinius. Edict of Milan is signed by Emperor Constantine the Great and the Emperor Licinius setting a tone for peace and Christian acceptance.

314

Peace is interrupted once again when armed conflict breaks out between the co-emperors. Periods of war and peace follow for ten years with Constantine increasingly victorious.

315

The arch of Constantine is erected in Rome.

316

Battle of Campus Ardiensis in which Constantine defeats Licinius.

317

Birth of Constantine II, in the city of Arelate.

320

Birth of the Emperor Constans, in the city of Constantinople.

322

St. Peter's Church is constructed in Rome.

323

Constantine drives the Goths out of Thracia.

324

Final victory for Constantine over Licinius atrianople and Chrysopolis. Constantine sole emperor.

325

The Council of Nicaea makes Christianity the religion of the Empire

326

Constantine executes his son, Crispus, followed by his wife Faustus a year later. She was boiled alive.

326

Constantine chooses Byzantium as the new capital of the Empire and renames it Constantinople.

328

Birth of the Emperor Valens, in the city of Cibalae.

332

Birth of the Emperor Julian the Apostate.

336

The Church of the Holy Sepulchre is built and dedicated in Jerusalem.

337

Constantine had himself baptized by Eusebius, the bishop of Nicomedia. Shortly before his death. Division of the empire between Constantine's three sons: Constantine II (west), Constans (middle), Constantius (east).

339

Birth of the bishop of Milan, Ambrose, in the city of Trier.

340

Civil war once again. Death of Constantine II against Constans at the battle of Aquileia.

341

Emperor Constans begins a successful campaign against the Franks.

343

The Emperor Constans campaigns against the Picts and Scots in Britannia, whom he successfully drives back into Caledonia.

344

Persian victory at Singara.

347

Birth of the Emperor Theodosius the Great, in the town of Cauca, Northwestern Spain.

348

Birth of Saint Jerome, the Christian writer.

350

Death of the Emperor Constans after a revolt broke out under Magnentius. The Persians invade and take Armenia.

351

Emperor Constantius II defeats the army of the pretender Magnentius in a battle near Mursa.

353

Battle of Mons Seleucus in which Contantius defeats Magnentius in a bloody engagement.

357

Julian defeats the Alemmani.

359

Sapor II invades Mesopotamia. Constantius goes to the east. Birth of the Emperor Gratian, in the town of Sirmium.

360

Julian's army proclaims him emperor and he marches east.

361

Death of Constantius II, Julian the Apostate takes over.

362

Julian outlaws the teaching of Christianity.

363

Battle of Ctesiphon, in which Julian defeats Shapur II, but Julian is killed in the battle. Jovian emperor.

363-381

The Augustan History is written in this period (363-381 A.D.). It is a Latin collection of biographies of Roman Emperors for the period 117 to 284 A.D. and their colleagues and usurpers. It presents itself as the work of six authors (the Scriptores Historiae Augustae), and written in the reigns of Diocletian and Constantine. But it uses later sources and adds elaborate fiction. Since it is the only continuous account for much of its period modern historians are understandably unwilling to abandon it despite its obvious untrustworthiness.

Dessau (1889) proposed it was composed by a single author in the late 4th century, probably in the reign of Theodosius I. One section (on Septimius Severus) quotes the mid-4th century historian Aurelius Victor, while another (on Marcus Aurelius) uses Eutropius, the Pagan historian who accompanied Emperor Julian the Apostate (361-363) against the Persians, and composed the Breviarium, a history of Rome from its foundation until Emperor Valens (364-378 A.D.).

Of interest is a (false) letter quoted at length, from Emperor Hadrian (117-138 A.D.) in Egypt to his brother-in-law Servianus, which refers to the worship of Serapis by residents of Egypt who described themselves as Christians, and Christian worship by those claiming to worship Serapis. Some claim this suggests a great confusion of the cults and practices, but it may simply be an example of the author's sarcasm and political spoofing:

"The land of Egypt, the praises of which you have been recounting to me, my dear Servianus, I have found to be wholly light-headed, unstable, and blown about by every breath of rumour.

There, those who worship Serapis are in fact Christians, and those who call themselves bishops of Christ are in fact devotees of Serapis!

There is no chief of the Jewish synagogue, no Samaritan, no Christian presbyter, who is not also an astrologer, a soothsayer, or an anointer.

Even the [Jewish] Patriarch himself, when he comes to Egypt, is forced by some to worship Serapis, by others to worship Christ."

- (Augustan History, Firmus et al. 8)

Servianus is saluted as consul, and Hadrian mentions his (adopted) son Lucius Aelius Caesar: but Hadrian was in Egypt in 130 A.D., while Servianus's consulship fell in 134, and Hadrian adopted Aelius in 136. The letter is said to have been published by Hadrian's freedman Phlegon (whose existence is mentioned nowhere except in the HA, in another suspect passage).

A passage in the letter dealing with the frivolousness of Egyptian religious beliefs refers to the Patriarch, head of the Jewish community in the Empire. This office only came into being after Hadrian put down the Jewish revolt of 132 A.D., and the passage is probably meant in mockery of the powerful late 4th-century Patriarch, Gamaliel. (See R. Syme, Emperors and Biography, pp. 21-24.)

These considerations bracket the work (in its present form) between 362 (Eutropius) and 389 A.D., when the worship of Serapis was effectively ended with the destruction of the Temple in Alexandria. Although as a forgery it is not a reliable guide to Alexandria in the early 2nd century, it may yet inform us of conditions there in the late 4th century.

- wikipedia, Augustan History, Serapis

364

Jovian reverses Julians anti-Christian edicts. Nominates Valentinian as his heir and dies. Valentinian makes his brother Valens eastern emperor and takes the west for himself. Permanent separation of the empire.

367

Valentinian defeats the Alemmani at Solicinium.

368

Valens at war with the Goths.

369

Peace with Goths

369

Huns invade Ostrogoth territory.

370

Theodosius drives invading Picts out of Britain once again.

371

Birth of the Emperor Valentinian II.

374

Theodosius the Great campaigns against the Sarmatians along the Danube.

374

Ambrose appointed bishop of Milan.

375

Death of Valentinian. Followed by Gratian who also promoted his infant brother Valentinian II at Milan. Gratian is the first emperor to refuse the office of Pontifex Maximus.

376

Theodosius the Elder is killed in Africa and his son, the Great retires from public service.

377

Emperor Valens and Emperor Gratian combine against Visigoth and Ostrogoth armies along the Danube. Goths move into Thracia. Birth of the Emperor Arcadius, in Spain.

378

Gratian defeats Alemanni. The Romans, under Valens are then defeated badly atrianople by Fritigern and the Goths. Perhaps the most terrible and unrecoverable defeat in Roman history. Valens killed.

379

Gratian nominated Theodosius (the Great) to replace Valens.

380

Theodosius the Great declares Christianity to be the sole religion of the empire.

382

Treaty of Theodosius with Visigoths.

383

Revolt of Maximus in Britain. Death of Gratian. Theodosius recognizes Maximus in the west and Valentinian II at Milan. Birth of the Emperor Honorius.

387

Emperor Theodosius signs a treaty with the Persian King Shapur III, giving Persia four fifths of Armenia, and Rome one fifth. He then crushed Maximus at Aquileia.

390

Birth of the Roman general Flavius Aetius.

391

Paganism is officially ended with edicts published by Emperor Theodosius.

392

Death of the Emperor Valentinian II. Eugenius replaces him, set up by the Germanic general Arbogast.

394

The last showing of the ancient Olympic Games is held in this year after it is banned by Emperor Theodosius the Great. There are no games again until 1896.

394

Theodosius and the Germanic Alaric defeat Arbogast at the River Frigidus.

395

Death of Theodosius the Great. His sons Honorius takes the west, and Arcadius the east. The Huns invade Armenia, Cappadocia and Syria.

395 - 397

Alaric invades the Balkans but is checked by Stilicho. Alaric set up as governor of Illyricum.

399

Ostrogoths invade and capture Galatia, Pisidia, and Bithynia.