Pleione lived in a southern region of Greece called Arcadia, on a mountain named Mount Kyllini. She married the Titan Atlas and gave birth to the Hyades, Hyas and the Pleiades. She was also the protectress of sailing. In different stories, Pleione had a different number of children (sometimes 3, 4, 5 or 7). Among her grandchildren were the god Hermes and the demigod Iasion.