Eurytus and Cteatus
Eurytus and Cteatus were the sons of either Actor or Poseidon and nephew of Augeas. Eurytus and Cteatus married the twin daughters of Dexamenus, Theraephone and Therenice, respectively. Their respective sons, Thalpius and Amphimachus, were counted among the Achaean leaders in the Trojan War.
Both brothers went on expeditions of war to the Neleus and the Pylians, and later led an army marching against their uncle Augeas at the behest of Heracles. However after the latter made peace, the brothers attacked Heracles and were subsequently killed by him outside Cleonae.