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Valentinian I
Valentinian I , also known as Valentinian the Great, was Roman emperor from 364 to 375. Upon becoming emperor he made his brother Valens his co-emperor, giving him rule of the eastern provinces while Valentinian retained the west....
Timeline of Events
364
2.26.364
Valentinian I is proclaimed Roman Emperor.
3.28.364
Roman Emperor Valentinian I appoints his brother Flavius Valens co-emperor.
367
8.4.367
Gratian, son of Roman Emperor Valentinian I, is named co-Augustus by his father and associated to the throne aged eight.