Events

• May 11 - Constantine I refounds Byzantium, renames it New Rome, and moves the capital of the Roman Empire there from Rome. It is later known as Constantinople.
• Frumentius is the first bishop of Ethiopia (approximate date).
• Eustathius, patriarch of Antioch, is banished to Trajanopolis

Births

• Basil of Caesarea, Eastern Orthodox saint (approximate date)
• St. Moses the Black, Christian monk
• Saint Macrina the Younger, Christian nun

Deaths

• Iamblichus, neoplatonist philosopher