CERCYON

a son of Poseidon by a daughter of Amphictyon, and accordingly a half-brother of Triptolemus. Others call him a son of Hephaestus. He came from Arcadia, and dwelt at Eleusis in Attica.

He is notorious in ancient story for his cruelty towards his daughter Alope and all who refused to fight with him, but he was in the end conquered and slain by Theseus.

Another personage of the same name is mentioned by Pausanias.