In Greek mythology, Medea (; , "Mēdeia", , "Medea") is a sorceress of Greek mythology. She was the daughter of King Aeëtes of Colchis, niece of Circe, granddaughter of the sun god Helios. She married the hero Jason, and had two children with him, 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.