Helen of Troy to the underworld, the domain of Hades, to kidnap Persephone. Hades pretended to offer them hospitality and set a feast, but, as soon as the pair sat down, snakes coiled around their feet and held them there. Helen's abduction caused an invasion of Athens by Castor and Pollux, who captured Aethra in revenge, and returned their sister to Sparta. In most accounts of this event, Helen was quite young; Hellanicus of Lesbos said she was seven years old and Diodorus makes her ten years old. On the other hand, Stesichorus said that Iphigenia was the daughter of Theseus and Helen,
Helen of Troy brought no gifts because he believed he had little chance to win the contest. He thus promised to solve the problem, if Tyndareus in turn would support him in his courting of Penelope, the daughter of Icarius. Tyndareus readily agreed, and Odysseus proposed that, before the decision was made, all the suitors should swear a most solemn oath to defend the chosen husband against whoever should quarrel with him. After the suitors had sworn not to retaliate, Menelaus was chosen to be Helen's husband. As a sign of the importance of the pact, Tyndareus sacrificed a horse. Helen and Menelaus