Auxentius (not in D.C.B.) was a native of Cappadocia (Hist. Ar. 75), and had been ordained presbyter at Alexandria by Gregory (next note). Upon the expulsion of the somewhat weak-kneed Dionysius after the council at Milan (355) he was appointed to that see by Constantius, although according to Athanasius (ubi supr.) he knew no Latin, nor any thing else except irreligion (‘a busybody rather than a Christian’). He took a leading part along with Valens and others at the Council of Ariminum (de Syn. 8, 10) and was included in the deposition of Arian leaders by that synod. Under the orthodox Valentinian he maintained his see in spite of the efforts of Philaster, Evagrius, and Eusebius of Vercellæ, and in spite of the condemnations passed upon him by various Western synods (362–371, see ad Epict. 1). In 364, Hilary travelled to Milan on purpose to expose him before Valentinian. In a discussion ordered by the latter, Hilary extorted from Auxentius a confession which satisfied the Emperor, but not Hilary himself, whose persistent denunciation of its insincerity caused his dismissal from the town. Auxentius seems after this to have intrigued to obtain Illyrian signatures to the creed of ( Niké or) Ariminum (Hard. Conc. 1. pp. 771, 773). Upon his death (374) Ambrose was elected bishop of Milan, but was confronted by the Arian party with a rival bishop in the person of a second Auxentius, said to have been a pupil of Ulfilas.