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
Hannah and Her Sisters sisters. He was interested in making something about the relationship between sisters which he felt was more complex than that between brothers. "Maybe that comes from childhood; my mother had seven sisters and their children were female so all I knew were aunts and female cousins." Mia Farrow later wrote that Allen had been intrigued about the subject of sisters for a long time. His earlier co-stars Janet Margolin had two sisters, and Diane Keaton had two, and Farrow had three. She says Allen gave her an early copy of "Hannah and Her Sisters" saying she could play whatever sister