(Ἀλέξανδρος), at first bishop in CAPPADOCIA, flourished A. D. 212. On the death of Severus, A. D. 211, he visited Jerusalem, and was made coadjutor of the aged Narcissus, bishop of that city, whom he afterwards succeeded. He founded an ecclesiastical library at Jerusalem, of which Eusebius made great use in writing his History. After suffering under Severus and Caracalla, he was at last thrown into prison at Caesarea, and, after witnessing a good confession, died A. D. 250. Eusebius has preserved fragments of a letter written by him to the Antinoites; of another to the Antiochenes (Hist. Eccl. 6.11); of a third to Origen (6.14); and of another, written in conjunction with Theoctistus of Caesarea, to Demetrius of Alexandria. (6.19.)