JasonThe hero who captained the Argo on the quest for the GOLDEN FLEECE. He was the son of AESON and Alcimede (or Polymede). In the usual version of the myth, Aeson should have become king of Iolcus on the death of his father, Cretheus, but the throne was usurped by his half-brother, PELIAS. At Jason's birth his parents, fearing for his life, told Pelias that their baby had been born dead, then secretly sent him to Mount Pelion, to be brought up by the wise Centaur CHEIRON, the educator of so many great heroes. Pelias, meanwhile, ruled on, though he knew from an oracle that he must beware of a man, coming from the country and wearing a single sandal, by whom he was destined to die...