 Sources place the birth of Nestorius in either 381 or 386 in the city of Germanicia in the Province of Syria, Roman Empire (now Kahramanmaraş in Turkey).He received his clerical training as a pupil of Theodore of Mopsuestia in Antioch.He was living as a priest and monk in the monastery of Euprepius near the walls, and he gained a reputation for his sermons that led to his enthronement by Theodosius II, as Patriarch of Constantinople, following the 428 death of Sisinnius I.