Bellerophon, a hero of Grecian mythology, whose real name was Hipponous, was a son of Glaucus, king of Corinth, and Eurymede, and a grandson of Sisyphus. He was called Belle-rophon in consequence of having slain a Corinthian eupatrid named Bellerus. After this crime he fled to Proetus, king of Argos, whose wife became enamored of him. Bellerophon received her advances coldly, and she accused him of having made insulting offers to her, insisting that he should be put to death. Proetus, not wishing to violate the laws of hospitality by slaying a man who was his guest, despatched him with a letter to Iobates, king of Lycia, in which that potentate was charged to have Bellerophon killed. Iobates hereupon sent him to combat the monster Chinuera. Bellerophon first caught the winged horse Pegasus, with the aid of Minerva, and mounting him, soared into the air and slew the monster from on high. Iobates next sent him to encounter the Solymi and the Amazons, but the hero still proved victorious. Lastly, Iobates placed a band of the bravest Lycians in ambush to attack him on his return. This device, however, was fruitless, for Bellerophon slew them all.

The Lycian monarch, now perceiving that he was invincible, revealed to him the contents of the letter which he had brought from Proetus, gave him his daughter Cassandra in marriage, and made him heir to the throne of his kingdom. The latter days of Bellerophon were unfortunate. As he attempted to soar to heaven on the back of Pegasus, Zeus sent a gadfly which so stung his winged steed that he cast his rider to the earth, where, lame and blind, he wandered lonely in the Aleian fields.