Glaucus

King of Ephyra (Corinth). Glaucus (Glaucos, Γλαύκος) was the son of Sisyphus and Merope, daughter of Atlas and Pleione (one of the Pleiades). Glaucus was the brother of Halmus, Ornytion and Thersander. He married Eurymede (Eurynome), daughter of Nisa, who bore him Bellerophon and Deliades.

However. In the Catalogues of Women, it was said that Zeus had cursed Glaucus, probably because of the god's hatred for Glaucus' father, so that any child he brought up (from his wife) would not be his own. It was the sea god Poseidon who had secretly slept with Glaucus' wife, and she bore Bellerophon to the god.

Glaucus was famous for his cruelty, feeding his horses with human flesh. Refusing to allow his mares to breed angered the goddess Aphrodite, who caused the them to go mad and trample him, before feeding upon his flesh, during the funeral games of Pelias.

Another account said that the mares devoured him after he lost a chariot race against Iolaüs (Iolaus), nephew of Heracles, at the funeral games of Pelias.