| AD | Event |
| 379-383 | Character and Conduct of the Emperor Gratian— His Defects |
| 383 | Discontent of the Roman Troops—
Revolt of Maximus in Britain |
| 383 | Flight and Death of Gratian |
| 383-387 | Treaty of Peace between Maximus and Theodosius |
| 380 | Baptism and Orthodox Edicts of Theodosius |
| 340-380 | Arianism of Constantinople |
| 378 | Gregory Nazianzen accepts the Mission of Constantinople |
| 380 | Ruin of Arianism at Constantinople |
| 381 | Ruin of Arianism in the East—
The Council of Constantinople
Retreat of Gregory Nazianzen |
| 380-394 | Edicts of Theodosius against the Heretics |
| 385 | Execution of Priscillian and his Associates |
| 374-397 | Ambrose, Archbishop of Milan |