4. Of Delos, a Greek grammarian, probably of a later date than the preceding one, is mentioned as the author of a sort of geographical dictionary (ἐθνῶν ὀνομασίαι, Schol. ad Apollon. Rhod. iii. 1178, Eudoc. p. 248; Eustath. ad Dionys. Perieg. 270), but is otherwise unknown.
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