HERODIANUS, a grammarian of Alexandria in Egypt, was son of the grammarian Apollonius Dyscolus. He seems to have resided at Rome in the reign of M. Aurelius, A. D.
163, to whom we find him dedicating a work on Prosody Herodotus (Προσodyν Καθολικῇ), in twenty books. He is praised by the ancients as an acute philologist, and possessed an intimate knowledge of grammar, which is proved to be correct by the numerous fragments of his works. (See Fabricii Biblioth. Græc. ed. Harles, v. vi. p. 278; also Essai Historique sur l'Ecole d'Alexandrie, par Matter, Par. 1820.)