 Fearing that Pelias would eventually notice and kill her son, Alcimede sent him away to be reared by the centaur Chiron,; she claimed that she had been having an affair with him all along.Pelias, fearing that his ill-gotten kingship might be challenged, consulted an oracle, who warned him to beware of a man wearing only one sandal.Many years later, Pelias was holding games in honor of Poseidon when the grown Jason arrived in Iolcus, having lost one of his sandals in the river Anauros ('wintry Anauros') while helping an old woman (actually the Goddess Hera in disguise) to cross.