Tiresias was a priest of Zeus, and as a young man he encountered two snakes mating and hit them with a stick. He was then transformed into a woman. As a woman, Tiresias became a priestess of Hera, married and had children, including Manto. After seven years as a woman, Tiresias again found mating snakes; depending on the myth, either she made sure to leave the snakes alone this time, or, according to Hyginus, trampled on them and became a man once more.