1. ALEXANDRINUS, patriarch of Alexandria in the middle of the ninth century.
He wrote in A. D. 869 or 870 De Unitate Ecclesiae
, a letter addressed to the emperor Basil I., printed Graece et Latine in the 8th vol. of Labbe's Concil.
and in the 5th vol. of Hardouin's Concil.
Cave, Hist. Lit.
ad an. 869; Fabric. Bibl. Graec.
vol. xi. p. 189.