ADRASTUS, in Greek legend, was the son of Talaus, king of Argos, and Lysianassa, daughter of Polybus, king of Sicyon.
Having been driven from Argos by Amphiaraus, Adrastus fled to Sicyon, where he became king on the death of Polybus.
Adrastus, followed by Polyneices and Tydeus, his two sons-inlaw, Amphiaraus, his brother-in-law, Capaneus, Hippomedon and Parthenopaeus, marched against the city of Thebes, and on his way is said to have founded the Nemean games.
As Amphiaraus had foretold, they all lost their lives in this war except Adrastus, who was saved by the speed of his horse Arion (Iliad, xxiii.
Ten years later, at the instigation of Adrastus, the war was renewed by the sons of the chiefs who had fallen.