In Greek mythology, Tyro (Τυρώ) was the daughter of Salmoneus and mother of Pelias and Neleus. Her father, Salmoneus, was the brother of Athamus and Sisyphus. 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 was born Pelias and Neleus, twin boys. Tyro exposed her sons on a mountain and they were raised by a maid. When they reached adulthood, Pelias and Neleus found Tyro and killed their stepmother, Sidero, for having mistreated their biological mother. Sidero hid in a temple to Hera but Pelias killed her anyway, causing Hera's undying hatred of Pelias - and glorious patronage of Jason and the Argonauts in their long quest for the Golden Fleece. Pelias' half brother, the son of Tyro and Cretheus, was the father of Jason.