Miaphysite patr. of Alexandria 457–60, 475–7. His nickname ‘Ailouros’, or ‘weasel’, was due to his lean build. He attended the second Council of Ephesus in 449, together with Patr. Dioscorus. After the lynching of the pro-Chalcedonian Patr. Proterius in 457 he was made patr. but was expelled by the emperor in 460, eventually to be restored under Basiliscus. His writings ( CPG 5475–5489), originally in Greek, survive for the most part only in Syriac and Armenian. His major work, ‘On the Unity of Christ’, against the Council of Chalcedon ( CPG 5475) is complete in Armenian (ed. K. Ter Mekerttschian and E. Ter-Minassiantz, 1908; text only) but only in an abridged form in Syriac (not yet fully published). Several of his letters and a refutation of another work against the Chalcedonian Definition of Faith and the Tome of Leo survive only in Syriac.