Eulogius patriarch of Alexandria from 581 to 608. Pope Gregory I makes particular mention of him as a successful polemic against the Nestorians, Severians, Theodosians, Cainites, Acephalians, and Agnoetae. Photius preserves numerous fragments of his writings. He died in 608. — Wetzer und Welte, Kirchen-Ler. 3:753, 754; Fabricius, Bibl. Graeca, (ed. Harles), 10:753.