cf. Letter clx.  Theodoret, Hist. Ecc. iv. 24.  He was a pupil of Silvanus, bishop of Tarsus.  Letter ccxliv.  Theodoret, Ep. xvi., refers to his obligations to him as a teacher.  In 378 he became bishop of Tarsus.  Only some fragments of his works remain, the bulk having been destroyed, it is said, by the Arians.