Bishop of Constantinople, born in Cappadocia; studied in Athens, where he became the friend of St. Basil, and held discussions with Julian, afterwards emperor and apostate, who was also studying there; had been bishop of Nazianzus before he was raised by Theodosius to the bishopric of Constantinople, which he held only for a year, at the end of which he retired into solitude; he was the champion of orthodoxy, a defender of the doctrine of the Trinity, and famed for his invectives against Julian; he has left writings that have made his name famous, besides letters, sermons, and poems (328-389). Festival, May 9.