Patr. of Alexandria from 385. In the early years of his patriarchate he took an active part in suppressing the remnants of paganism in the city. Originally a supporter of Origenism, he became an opponent of the Origenist monks. When the Tall Brothers were sheltered at Constantinople by St John Chrysostom, Theophilus used this opportunity to secure Chrysostom's deposition at the Synod of the Oak in 403. The Copts and Syrians celebrate his feast on 15 and 17 Oct. respectively.