In Greek mythology, Medea (; , Medeia, , Medea) is a sorceress who was the daughter of King Aeëtes of Colchis, niece of Circe, granddaughter of the sun god Helios, and later wife to the hero Jason, with whom she had two children, Mermeros and Pheres. In Euripides's play Medea, Jason leaves Medea when Creon, king of Corinth, offers him his daughter, Glauce. The play tells of Medea avenging her husband's betrayal by killing their children.