The Angus Family of warlocks is only featured in the short story Preconceived in the novel. The Warren Witches. Only two members appear in the story: Simon and Bartholomew. These warlocks are powerful and extremely dangerous in their specialty of a distinct resurrection spell: when one descendant casts it while being vanquished, their deceased ancestor is resurrected in a previous timeline, which would allow them to change the future by altering the past. They also have a birthmark in the shape of a crescent moon. They are famous enough to have an entry in the Book of Shadows.