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.
Zeus and the Tortoise deign to be present at the wedding of Zeus. The divine messenger Hermes was then sent to throw her and her house into the river, where she was changed into the animal now bearing her name. In the late 15th century, the Venetian Laurentius Abstemius created a Neo-Latin variant on the fable which was subsequently added to their fable collections by both Gabriele Faerno and by L'Estrange. It relates how, when the animals were invited to ask gifts of Zeus at the dawn of time, the snail petitioned for the ability to carry her home with her. Zeus asked if