Eileithyia Hearth-Woman was a prehistoric witch and an ancestor of the Harman Family. According to the family tree, she was the daughter of Iluna Hearth-Woman and Alfar of the Winds, thus making her the granddaughter of Hellewise Hearth-Woman. She presumably succeeded her mother as leader of the prehistoric witch tribe and carried on the Hearth-Woman line. The family tree states her partner was Creon the Stranger and their daughter was Felina Hearth-Woman.
- Eileithyia, also spelt Ilithyia, is the name of the Greek goddess of childbirth. Interestingly, one Eileithyia's descendants, Thea Harman, often prays to or calls upon this goddess.
- Eileithyia's name is spelt Elleithyia on the family tree, but it is not recorded anywhere else spelt this way, so this is possibly a mistake.