Gratian in Wikipedia

Flavius Gratianus (18 April/23 May 359 – 25 August 383), commonly known as Gratian, was Roman Emperor from 375 to 383. The eldest son of Valentinian I, during his youth Gratian accompanied his father on several campaigns along the Rhine and Danube frontiers. Upon the death of Valentinian in 375, Gratian's brother Valentinian II was declared emperor by his father's soldiers. Gratian gained a decisive victory over the Alamanni in 378 at the Battle of Argentovaria. That same year, his uncle Valens was killed in the Battle of Adrianople against the Goths - making Gratian essentially ruler of the entire empire. He favoured the Christian religion against Roman polytheism, refusing the traditional polytheistic attributes of the emperors and removing the Altar of Victory from the Roman Senate...