Argos after the Trojan War

Diomedes, a son of Tydeus, was captain of the Argives forces at Troy and brought eighty ships with him from Argos, Tiryns, Epidaurus and Troezen. His lieutenants Sthenelus, son of Capaneus, and Euryalus, son of Mecisteus, accompanied him. All three leaders had previously marched with the Epigoni against Thebes and all three were suitors of Helen. Diomedes was one of the more prominent warriors in the war in Troy. Next to Achilles, Diomedes was the strongest warrior on the Greek side.

Not long after Diomedes' return with the Argive army, the young king Cyanippus, grandson of Adrastus, died. Cylarabes, son of Sthenelus, became the king of Argos. Although Diomedes was the son-in-law of Adrastus, Cylarabes being the descendant of Proëtus had a better claim to the throne than the great hero did.

Diomedes was later forced into exile when his wife took Cometes, the son of Sthenelus, as her lover. Diomedes migrated to Argyripa, a city in southern Italy. According to Vergil in the Aeneid, Diomedes refused to aid Turnus and fight a war against the Trojan hero Aeneas.

Orestes, the son of Agamemnon and Clytemnestra, later seized the throne from Cylarabes. Orestes' son Tisamenus succeeded him, but he was killed fighting the return of the Heraclids.