Brother of Magnentius, the ill-fated usurper who almost upset the Constantine dynasty. Decentius was made Caesar shortly after Magnentius had gained control of Italy in a clear signal that he meant to start an imperial dynasty of his own. Unfortunately, the war did not go well for Magnentius and, following a devastating defeat in battle, committed suicide rather than test the mercy of Constantius II. On hearing of Magnentius' suicide Decentius followed suit and hanged himself.