Harriet Casey

Harriot was a woman married to the Chaplian, Arthur. She was carrying a baby, the only blood-relative to Sirk. To become fully demon Sirk had to kill all his blood-relatives; he thought killing Arthur was going to complete his ritual and become fully demon. But due to Harriot and Arthur's child, Sirk had to kill Harriot which would of killed the child.

The Charmed One's defeated Sirk, and Harriot and her child was saved. Sadly for her, Arthur died.