A Dictionary of Greek and Roman biography and mythology

surnamed PHILIPPUS, was son of Herod the Great by Mariamne, the daughter of the high-priest Simon. (J. AJ 18.5.4.) He was the first husband of Herodias, who afterwards divorced him, contrary to the Jewish law, and married his half-brother, Herod Antipas. The surname of Philippus is not mentioned by Josephus, but it is clear that it is he, and not the tetrarch of Ituraea, who is meant by the Evangelists (Matth. 14.3; Mark, 6.17; Luke, 3.19), where they speak of Philip, the brother of Herod. (See Rosenmüller, Schol. in Nov. Test. vol. i. p. 304.)

[E.H.B]