wife was the Oceanid Metis, whom he swallowed on the advice of Gaia and Uranus, so that no son of his by Metis would overthrow him, as had been foretold. Later, their daughter Athena would be born from the forehead of Zeus. Zeus's next marriage was to his aunt and advisor Themis, who bore the Horae (Seasons) and the Moirai (Fates). Zeus then married the Oceanid Eurynome, who bore the three Charites (Graces). Zeus's fourth wife was his sister, Demeter, who bore Persephone. The fifth wife of Zeus was his aunt, the Titan Mnemosyne, whom he seduced in the form of a mortal shepherd. Zeus and Mnemosyne had the nine Muses. His sixth wife was the Titan Leto, who gave birth to Apollo and Artemis on the island of Delos. Zeus's seventh and final wife was his older sister Hera. Zeus and Hera Zeus was the brother and consort of Hera. According to Pausanias, Zeus had turned himself into a cuckoo to woo Hera. By Hera, Zeus sired Ares, Hebe, Eileithyia and Hephaestus, though some accounts say that Hera produced these offspring alone. Some also include Eris, Enyo and Angelos as their daughters. In the section of the Iliad known to scholars as the Deception of Zeus, the two of them are described as having begun their sexual relationship without their parents knowing about it. According to a scholion on Theocritus' Idylls, when Hera was heading toward Mount Thornax alone, Zeus created a terrible storm and transformed himself into a cuckoo bird who flew down and sat on her lap. When Hera saw the cuckoo, she felt pity for him and covered him with her cloak. Zeus then transformed back and took hold of her; because she was refusing to sleep with him due to their mother, he promised to marry her. In one account Hera refused to marry Zeus and hid in a cave to avoid him; an earthborn man named Achilles convinced her to give him a chance, and thus the two had their first sexual intercourse. Zeus then promised Achilles that every person who bore his name shall become famous. A variation goes that Hera had been reared by a nymph named Macris on the island of Euboea, but Zeus stole her away, where Mt. Cithaeron, in the words of Plutarch, "afforded them a shady recess". When Macris came to look for her ward, the mountain-god Cithaeron