1. A son of Sisyphus, and father of Haliartus and Coronus. (Paus. ix. 34. § 5.)
2. A son of Agamididas, and the father of Lathria and Anaxandra, at Sparta. (Paus. iii. 16. § 5.)
3. A son of Polyneices and Argeia, and one of the Epigoni; he was married to Demonassa, by whom he became the father of Tisamenus. After having been made king of Thebes, he went with Agamemnon to Troy, and was slain in that expedition by Telephus. His tomb was shown at Elaea in Mysia, and sacrifices were offered to him there. (Paus. iii. 15. § 4, vii. 3. § 1, ix. 5. § 7, x. 10. § 2; Schol. ad Pind. Ol. ii. 76; Dict. Cret. ii. 2; Herod. iv. 147; Apollod. iii. 7. § 2.) Virgil (Aen. ii. 261) enumerates Thersander among the Greeks concealed in the wooden horse. Homer does not mention him.