Ithacus

(Ἴθακος), a son of Pterelaus, a hero from whom Ithaca was believed to have derived its name. (Hom. Od. 17.207; Eustath. ad Hom. pp. 307, 1815; Hesych. s. v.) Odysseus, king of Ithaca, is sometimes simply called Ithacus, or the Ithacan. (Ov. Ep. ex Pont. 1.3, 33; Verg. A. 2.104.) [L.S]

(Ἴθακος). The son of Pterolaüs. He was the hero after whom Ithaca was said to have been named (Odyss. xvii. 207).

• Apollod. E.7.25