3. Of ALEXANDRIA, a son of Glaucus, a Greek grammarian, who flourished from the time of Nero to that of Trajan. He was secretary and librarian to the emperors in whose reign he lived, and was also employed in embassies. He was the teacher of the grammarian Parthenius, and a pupil of the philosopher Chaeremon, whom he also succeeded at Alexandria. (Athen. 11.501; Suid. s. v. Διονύσιος; Eudoc. p. 133.)