A Dictionary of Greek and Roman biography and mythology

(Ἀμμώνιος) GRAMMATICUS, professor of grammar at Alexandria, with Helladius, at the close of the 4th century. He was also priest of the Egyptian Ape. On the vigorous overthrow of idolatry in Egypt by the bishop Theophilus A. D. 389-391, Ammonius and Helladius fled to Constantinople and there resumed their profession. (Socr. Hist. Eccl. 5.16.)

The historian Socrates was a pupil of Ammonius. (Hist. Eccl. 5.16.)

[A.J.C]