Medusa part of their religion. Medusa was beheaded by the hero Perseus, who thereafter used her head, which retained its ability to turn onlookers to stone, as a weapon until he gave it to the goddess Athena to place on her shield. In classical antiquity the image of the head of Medusa appeared in the evil-averting device known as the "Gorgoneion". The three Gorgon sisters—Medusa, Stheno, and Euryale—were all children of the ancient marine deities Phorcys (or "Phorkys") and his sister Ceto (or "Keto"), chthonic monsters from an archaic world. Their genealogy is shared with other sisters, the Graeae, as in
The Twelve Sisters ogress named Santhumala saw the exhausted and emaciated girls resting under a tree and decided to adopt them. The ogress transformed herself into a human being, a pleasant-looking woman, and brought the twelve sisters to her home. For many years she treated them as her own daughters and under her care the twelve girls grew up into beautiful young women. One day, while Santhumala was away hunting, the twelve sisters met an old man who told them that Santhumala was not a human, but an ogress who liked to eat young women like them. So they fled from the ogre