From The Art and Popular Culture Encyclopedia
In Greek mythology, Omphale was a daughter of Iardanus, either a king of Lydia, or a river-god. Omphale was queen of the kingdom of Lydia in Asia Minor; according to Bibliotheke she was the wife of Tmolus, the oak-clad mountain king of Lydia; after he was gored to death by a bull, she continued to reign on her own. Diodorus Siculus provides the first appearance of the Omphale theme in literature, though Aeschylus was aware of the episode. The Greeks did not recognize her as a goddess: the undisputed etymological connection with omphalos, the world-navel, has never been made clear.
In punishment for his murder of Iphitus, Heracles/Hercules was given to Omphale as a slave. Many variants of this story say that she not only compelled him to do women's work, but compelled him to dress as a woman while her slave.
- Omphale (nouvelle) by Gautier