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.[1]

Greek rhetorician and grammar Athenaeus of Naucratis, in his work Deipnosophistae, Book II, cited that poet Ibycus, in his Melodies, described twins Eurytus and Cteatus as "λευκίππους κόρους" ("white-horsed youths") and said they were born from a silver egg,[2] - a story that recalls the myth of Greek divine twins Castor and Pollux and their mother Leda.

Greek legend maintains that the brothers were born conjoined with only one body but two heads, four arms and four legs,[3] though Homer makes no mention of this.

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.[4][5]