Caesar Proclamation at Serdica
Constantine II is formally proclaimed Caesar at Serdica alongside Crispus and Licinius Junior.
Permanent historical records · Updated 2026-11-03
317 in Roman Empire
Explore 6 historical events and records for Roman Empire in 317.
Historical records for Roman Empire in 317
Sorted by month and day. Records with no month are shown last. Showing 6 of 6 unique records.
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March
Sons Made Caesars
Constantine II and Crispus are proclaimed Caesars alongside Licinius Junior under the peace settlement between Constantine and Licinius.
Other events (month unknown)
Birth of Constantius II
Birth of Constantius II, son of Constantine the Great
Christian Upbringing
Constantine II is raised as a Christian within the imperial household of Constantine I.
Peace Settlement with Licinius
The peace settlement after the first civil war transfers extensive Balkan territories to Constantine while Licinius retains Thrace and the eastern provinces.
Rule of Illyricum
The settlement with Licinius gives Constantine control over most of Illyricum and strengthens his position in the Balkans.
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.