The pair took up residence in Corinth, and Medea had two sons by Jason. However, Jason began casting his eyes about for a more suitable mate. As ambition would have it, he arranged to marry the king of Corinth's daughter, Glauce (also called Creüsa). When Medea learned of this she uttered some rash words that caused her to be banished from the city. Medea was heartsick at Jason's coldness after everything she had done for him, and she determined to take her revenge. Medea prepared a splendid garment for Jason's bride. When Glauce tried it on she felt her flesh burn away and died in agony. Knowing that life in exile would be harsh on her two sons, Medea killed the boys. She escaped Jason's wrath in a sky-borne chariot drawn by dragons. Jason also lost Hera's favor, and lived an empty life from then on. His single triumph was finished, and he ruled Corinth but produced no more children. Finally, one day as he was brooding under the prow of the Argo its beam fell on him, killing him.
Having no son, King Aegeus of Athens consulted the Delphic oracle, which told him in very obscure terms that he was not to lie with any woman until he reached his home, or he would die of grief. He failed to grasp the meaning, and while visiting King Pittheus at Troezen he got drunk, so Pittheus sent Aethra into him, knowing that this daughter would produce an heir to Aegeus' throne. Some claim that Poseidon also slept with Aethra on that night. In any case, Aegeus showed Aethra a rock under which he was leaving his sandals and sword, and he told her that if she gave birth to a boy and if he grew strong enough to lift the rock and recover the sword and sandals he should come to Athens to claim his inheritance.
