|Form: Gr. Thersandros.
|Son of Polynices and Argeia, husband of Demonassa the daughter of Amphiaraus, and king of Thebes after the taking of that city by the Epigoni (q.v.). According to post-Homeric traditions he took part in the expedition against Troy, but was killed on first landing by Telephus. In Vergil ["Thessandrus," Aen. ii 261], on the other hand, he is one of the heroes of the wooden horse. His son and successor was Tisamenus. His grandson, Autesion, at the bidding of the oracle, went over to the Dorians who had settled in Lacedaemon ; and his greatgrandson Theras founded a colony in the island of Calliste, which from that time was called Thera. It was from him that Theron, the tyrant of Agrigentum in Sicily, traced his descent.