Michael Alexandrinus a noted patriarch of Alexandria, flourished near the middle of the 9th century. He was very active in behalf of a union of the Eastern and Western churches, and wrote, about A.D. 869, De Unitate Ecclesii
(printed in Labbe's Concil. volume 8, and in Hardouin, Concil. volume 5) See Cave, Hist. Lit. ad an. 869; Fabricius, Bibl. Graca, 11:188.