(Ἑρμαπίας or Ἑρμαππίας), a Greek grammarian, who is mentioned several times in the Venetian scholia on Homer, among the commentators of the Homeric poems (ad II. 4.235, 11.326, 13.137.) From these passages we learn that his commentary treated on grammar, accent, and the like; but the author, as well as his commentaries, are otherwise unknown.
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890