A praefect of the Praetorian Guard at Rome who succeeded Paternus as sole commander in A.D.
183. As the emperor Commodus was wholly given up to debauchery, Perennis was practically
supreme in the State; but having incurred the hatred of his troops, he was massacred by them
in A.D. 186 or 187. Opinions differ as to the character of Perennis—Dio Cassius
eulogizing him and other historians accusing him of complicity in the evil actions of the
emperor (Dio Cass. lxxii. 9; Vit. Commod.