thanks to Wikipedia:
In Greek mythology, Circe (/ˈsɜrsiː/; Greek Κίρκη Kírkē pronounced [kírkɛ͜ɛ]) was a goddess of magic (or sometimes a nymph, witch, enchantress or sorceress). By most accounts, Circe was the daughter of Helios, the god of the sun, and Perse, an Oceanid. Her brothers were Aeetes, the keeper of the Golden Fleece, and Perses. Her sister was Pasiphaë, the wife of King Minos and mother of the Minotaur. Other accounts make her the daughter of Hecate, the goddess of witchcraft herself.Circe was renowned for her vast knowledge of potions and herbs. Through the use of magical potions and a wand or a staff, she transformed her enemies, or those who offended her, into animals.