(Αὐτομέδων), a son of Diores, was, according to Homer, the charioteer and companion of Achilles, whereas Hyginus (Hyg. Fab. 97) makes him sail by himself with ten ships against Troy. According to Virgil (Aen. 2.476), he fought bravely by the side of Pyrrhus, the son of Achilles. (Hom. Il. 9.209, 16.148, 219, 17.429, &c., 19.392, 24.474.)
[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