Hippius, ii, m.,
I a Roman proper name , Cic. Fam. 13, 76.
2 ‡ Hippius , id est equester, Neptunus dictus est, etc., Paul. ex Fest. p. 101 Müll. [= Ἵππειος or Ἵππιος].
COLO´NUS HI´PPIUS[ATTICA326a.] ...
Dictionary of Greek and Roman Geography