Jason was the leader of the Argonauts, the band of heroes who sailed aboard the Argo to Colchis in search of the Golden Fleece. The son of Aeson, the rightful king of Iolcus, he undertakes the expedition after his uncle Pelias promises to surrender the throne if Jason completes the apparently impossible task. Although remembered as the voyage’s commander, Jason succeeds largely through the abilities of his companions and the assistance of Medea, daughter of King Aeëtes of Colchis.
Jason's success in Colchis depends heavily on Medea, who gives him the means to survive Aeëtes' trials, seize the Golden Fleece and escape. Their later story becomes darker: after Jason abandons Medea for a politically advantageous marriage at Corinth, Greek tragedy makes the destruction of their family the consequence of his broken loyalty. The contrast between heroic expedition and personal failure is central to his later literary reputation.
Henry Treece’s Jason gathers the Argonauts and sails east in search of the Golden Fleece, hoping that the prize will restore the kingship denied to him. In Apollonius of Rhodes’ Jason and the Argonauts, Jason was the leader of the Argonauts, the band of heroes who sailed aboard the Argo to Colchis in search of the Golden Fleece. Jason is treated fictionally in Euripides’ Medea and Other Plays, Apollonius of Rhodes’ The Voyage of Argo, Homer’s The Iliad, and Homer’s The Odyssey.