|Grandson of Bias, son of Talaus and Lysimache. In a quarrel between the three houses reigning in Argos, the Biantidae, Melampodidae, and Proetidae, he is driven out by Amphiaraus, who also killed his father, flees to his mother's father, king Polybus of Sicyon, and inherits his kingdom. But, reconciled to Amphiaraus, to whom he gives his sister Eriphyle, he returns and rules over Argos. During one stormy night a great scuffle is heard outside the palace: two fugitives, Polyneices son of OEdipus of Thebes, and Tydeus son of OEneus of Calydon (one wrapped in a lion's hide, the other in a boar-skin), have sought refuge in the front-court, and are fighting for a night's lodging. Adrastus, coming forth, recognises the fulfilment of an oracle which had bidden him marry his daughters to a lion and a boar. He gives Argeia to Polyneices and Deipyle to Tydeus, promising to conduct those princes home and reinstate them in their rights. Thus began under his lead the far-famed and fatal expedition of the Seven against Thebes (q.v.). He alone escapes destruction by the help of his divine winged steed Areion. Ten years after, with the sons of the slain, the Epigoni (q.v.), and his own son Aegialeus, he again marches upon Thebes, takes and destroys the town, but loses his son, and dies of grief on his way home at Megara, where, as well as at Sicyon and Athens, he was worshipped as a hero.