380

Events 

 January or February – Emperor Theodosius I is baptized.
 February 27 – Edict of Thessalonica: Theodosius I, with co-emperors Gratian and Valentinian II, say that all Roman citizens should become Christians.
 The Rock of Cashel is built in Ireland.
 The Visigothic chieftain Fritigern dies. His rival Athanaric becomes king of the entire Gothic nation.

 Births 

 Aelia Eudoxia, empress and wife of Arcadius
 Alexius, Eastern saint
 Eucherius, bishop of Lyon
 Hephaistio of Thebes, Egyptian astrologer

 Deaths 

 Peter II, Patriarch of Alexandria
 Samudragupta, ruler of the Gupta Empire
 Wang Fahui, empress of the Jin Dynasty
Category:380s