Gratian was the passionately Christian son of Valentinian I. He succeeded his father in 375 AD as Augustus, but devoted much of his time to hunting. He refused to take the position of Pontifex Maximus on his succession, the old post of Chief Priest that every Emperor adopted, so it was left vacant and the position disappeared. On his uncle's Valens' death, Gratian raised Theodosius, a son of a disgraced former general of Valentinian's, to the position of Augustus. In 383 AD Magnus Maximus revolted in Britain, and defeated Gratian, who died whilst fleeing towards the Alps
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