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
Achaeus (son of Poseidon) Achaeus (son of Poseidon) In Greek mythology, Achaeus or Achaios (; Ancient Greek: "Akhaios" derived from "achos" "αχος" "grief, pain, woe"), has been said to be the eponym of Achaea, otherwise attributed to another Achaeus, the son of Xuthus, son of Deucalion. Achaeus is the son of Poseidon, god of the sea and Larissa, daughter of Pelasgus, the son of Triopas and this makes him of Argive descent through his mother's parentage. He is the brother of Phthius and Pelasgus. Together with his brothers Phthius and Pelasgus, they left Achaean Argos with a Pelasgian contingent for Thessaly. They then established