Valentinian II was the son of Valentinian I and Justina. He lived a relatively short life, to the age of 21, and was found hanged under mysterious circumstances. It has been disputed whether it was suicide or murder by the general Arbogast. Valentinian and his brother Gratian served together as partners in the western empire. This changed however when Gratian was murdered by the usurper Magnus Maximus in 383 AD. At that point Valentinian was placed in power but eventually had to flee due to Magnus Maximus’ invasion of Italy. Valentinian sought the help of his co-ruler and uncle Theodosius I. Theodosius defeated Magnus Maximus and then reinstalled his nephew in power in the west. Valentinian continued to rule with influence from Arbogast and finally met his end in 392 either in suicide or murder.