Who was the mother of witches in Greek mythology?

In some traditions of Greek mythology, the mother of the sorceresses Circe and Medea was given as Hecate, the chief goddess presiding over magic and spells. A lunar deity, Hecate was associated with the moon and the night. Her spheres of influence included boundaries and liminal spaces, such as crossroads and entryways. She was also regarded as a deity of the underworld and was able to move freely between the realms of the living and the dead.