Arachne
It has also been suggested that Jeremias Gotthelf's nineteenth century novella, "The Black Spider", was heavily influenced by the Arachne story from Ovid's "Metamorphoses". In the novella, a woman is turned into a venomous spider having reneged on a deal with the devil.
Helen of Troy
On the other hand, in the "Cypria", part of the Epic Cycle, Helen was the daughter of Zeus and the goddess Nemesis. The date of the "Cypria" is uncertain, but it is generally thought to preserve traditions that date back to at least the 7th century BC. In the "Cypria", Nemesis did not wish to mate with Zeus. She therefore changed shape into various animals as she attempted to flee Zeus, finally becoming a goose. Zeus also transformed himself into a goose and raped Nemesis, who produced an egg from which Helen was born. Presumably, in the "Cypria", this egg was somehow transferred to Leda. Later sources state either that it was brought to Leda by a shepherd who discovered it in a grove in Attica, or that it was dropped into her lap by Hermes.