Death of Constantine I
Constantine I dies, opening the succession that elevates Constantine II and his brothers to rule separate parts of the empire.
Permanent historical records · Updated 2026-11-03
337 in Roman Empire
Explore 32 historical events and records for Roman Empire in 337.
Historical records for Roman Empire in 337
Sorted by month and day. Records with no month are shown last. Showing 32 of 32 unique records.
32Unique records
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29Named events on this page
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13Places on this page
May
Death of Constantine I the Great
Constantine I dies near Nicomedia on May 22, 337, after falling ill while preparing for a Persian campaign.
June
Letter Recalling Athanasius
While still Caesar, Constantine II writes from Trier authorizing Bishop Athanasius to return from exile to Alexandria.
September
Acclaimed Augustus
The army acclaims Constantine II, Constantius II and Constans as Augusti after the Constantinian succession settlement.
Succession
Constantius II & his 2 brothers are acclaimed as Augusti
Assassination of Delmatius
Constantius IIs brother Delmatius is assassinated. Assassinated alongside other members of his familly after the death of Constantine
Assassination of Julius
Constantius IIs brother Julius Constantius is assassinated
Other events (month unknown)
Assassination of Flavius Julius Dalmatius
Death of Dalmatius
Baptism
Shortly before his death, Constantine receives Christian baptism from Eusebius, bishop of Nicomedia.
Burial
Leads his fathers funeral procession
Claim of Seniority among Brothers
Constantine II begins asserting a senior position among Constantine I's sons, a claim that later contributes to conflict with Constans.
Death of Flavius Julius Dalmatius
Death of Dalmatius
Dynastic Purge after Constantine I
Male relatives including Dalmatius and Hannibalianus are killed after Constantine I's death; there is no firm evidence that Constantine II personally ordered the purge.
Exile of Athanasius
Faces a trial at Tyre & seeks exile in Constantinople
Limited Gain from Dalmatius Removal
After Dalmatius is killed in the dynastic purge, Constantine II receives relatively little of the territory originally intended for his cousin.
Massacre
Escapes the massacre of the Flavian family
Mobilization
Constantine mobilizes forces for a planned campaign against Shapur II's Sasanian Empire but dies before the expedition begins.
Rule of Britain
The territorial settlement following Constantine I's death assigns Britain to Constantine II's western realm.
Rule of Egypt
Becomes ruler of Thrace, Macedonia, Greece, Asia & Egypt after Constantines death
Rule of Gaul
The succession settlement gives Constantine II control of Gaul as part of his share of the Roman Empire.
Rule of Greece
Becomes ruler of Thrace, Macedonia, Greece, Asia & Egypt after Constantines death
Rule of Macedonia
Becomes ruler of Thrace, Macedonia, Greece, Asia & Egypt after Constantines death
Rule of Spain
Constantine II receives Spain as part of the western territories assigned to him after his father's death.
Rule of Thrace
Becomes ruler of Thrace, Macedonia, Greece, Asia & Egypt after Constantines death
Succession
Succeeds as Emperor of Rome. Shares the empire with his brothers Constantine II & Constantius II
Succession
After Constantine's death, his surviving sons Constantine II, Constantius II, and Constans eventually rule separate portions of the empire.
Succession
Succeeds as Emperor of Rome, in the East. Shares the Empire with his brothers Constans & Constantine II. After his fathers death plays a part in killing members of the imperial family
Synod
Faces a trial at Tyre & seeks exile in Constantinople
Theodora Commemorative Coinage
Coinage honoring Flavia Maximiana Theodora is produced at Trier after the dynastic killings, with Constantine II's mint playing a leading role.
Tomb Preparations
Constantine prepares an imperial burial place for himself in the Church of the Holy Apostles at Constantinople.
Trial
Faces a trial at Tyre & seeks exile in Constantinople
Western Imperial Share
Constantine II's imperial share consists principally of Britain, Gaul, and Spain, while Italy and Africa remain under Constans.
How these records were prepared
Generated from the World History Database historical_events table. Identical display records are collapsed; descriptions otherwise retain the stored text. Coverage and source quality vary. Check primary and specialist sources before citing individual historical claims.