In Greek mythology, Medea is the daughter of King Aeëtes of Colchis, a niece of Circe and the granddaughter of the sun god Helios. Medea figures in the myth of Jason and the Argonauts, appearing in Hesiod's Theogony around 700 BC, but best known from Euripides's tragedy Medea and Apollonius of Rhodes' epic Argonautica. Medea is known in most stories as a sorceress and is often depicted as a priestess of the goddess Hecate.