Death of Licinius
Licinius eliminates the Caesar Maximin Daia
Permanent historical records · Updated 2026-11-03
313 in Roman Empire
Explore 11 historical events and records for Roman Empire in 313.
Historical records for Roman Empire in 313
Sorted by month and day. Records with no month are shown last. Showing 11 of 11 unique records.
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April
Unification
Licinius unifies the whole of the Eastern Empire under his rule
Other events (month unknown)
Alliance with Licinius
Constantine strengthens his alliance with Licinius when Licinius marries Constantine's half-sister Constantia at Milan.
Battle of Tzirallum
Victory enables Licinius to become the ruler of the east. Daia marches from Syria with 70,000 but is defeated by Licinius in Asia Minor
Christian Worship Gains Legal Protection
The legalisation of Christian worship under Constantine created a new religious setting for communities around Verulamium and the later cult of Alban.
Edict of Milan
Constantine and Licinius agree at Milan on a policy of religious toleration and restoration of confiscated Christian property.
Edict of Milan
Agrees on a policy of Christian toleration
Invasion of Europe
Daia marches from Syria with 70,000 but is defeated by Licinius in Asia Minor
Marriage
Marries Constantines sister Constanta, temporally uniting the 2 halves of the Empire
Mirocles Attends Council Of Rome
Bishop Mirocles of Milan participated in the western church's deliberations at the council held in Rome in 313.
Restoration of Christian Property
The Milan settlement provides for confiscated Christian meeting places and other property to be restored to Christian communities.
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.