Poseidon son named Triton, a merman. Poseidon was the father of many heroes. He is thought to have fathered the famed Theseus. A mortal woman named Tyro was married to Cretheus (with whom she had one son, Aeson), but loved Enipeus, a river god. She pursued Enipeus, who refused her advances. One day, Poseidon, filled with lust for Tyro, disguised himself as Enipeus, and from their union were born the heroes Pelias and Neleus, twin boys. Poseidon also had an affair with Alope, his granddaughter through Cercyon, his son and King of Eleusis, begetting the Attic hero Hippothoon. Cercyon had his
Amphitrite third one who encircles [the sea]", was so entirely confined in her authority to the sea and the creatures in it that she was almost never associated with her husband, either for purposes of worship or in works of art, except when he was to be distinctly regarded as the god who controlled the sea. An exception may be the cult image of Amphitrite that Pausanias saw in the temple of Poseidon at the Isthmus of Corinth (ii.1.7). Pindar, in his sixth Olympian Ode, recognized Poseidon's role as "great god of the sea, husband of Amphitrite, goddess of the golden