Helen of Troy refuge with Leda. The swan gained her affection, and the two mated. Leda then produced an egg, from which Helen emerged. The First Vatican Mythographer introduces the notion that two eggs came from the union: one containing Castor and Pollux; one with Helen and Clytemnestra. Nevertheless, the same author earlier states that Helen, Castor and Pollux were produced from a single egg. Pseudo-Apollodorus states that Leda had intercourse with both Zeus and Tyndareus the night she conceived Helen. On the other hand, in the "Cypria", part of the Epic Cycle, Helen was the daughter of Zeus and the goddess Nemesis.
Helen of Troy let the sword drop from his hand. Electra wails: Helen returned to Sparta and lived for a time with Menelaus, where she was encountered by Telemachus in Book 4 of "The Odyssey". As depicted in that account, she and Menelaus were completely reconciled and had a harmonious married life—he holding no grudge at her having run away with a lover and she feeling no restraint in telling anecdotes of her life inside besieged Troy. According to another version, used by Euripides in his play "Orestes", Helen had been saved by Apollo from Orestes and was taken up to Mount Olympus