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 Clader argues that, if indeed Helen was worshiped as a goddess at Therapne, then her powers should be largely concerned with fertility, or as a solar deity. There is also evidence for Helen's cult in Hellenistic Sparta: rules for those sacrificing and holding feasts in their honor are extant. Helen was also worshiped in Attica along with her brothers, and on Rhodes as Helen "Dendritis" (Helen of the Trees, Έλένα Δενδρῖτις); she was a vegetation or a fertility goddess. Martin F. Nilsson has argued that the cult in Rhodes has its roots to the Minoan, pre-Greek era, when Helen was