Thaddeus Thurkell (father)
It is rare for a single Squib to be born into a wizarding family. The fact that all seven of the Thurkell brothers were non-magical seems to indicate that there was something out of the ordinary about their case.
- Harry Potter and the Philosopher's Stone (video game) (Appears on a Famous Wizard Card)
- Harry Potter and the Chamber of Secrets (video game) (Appears on a Famous Wizard Card)
- Harry Potter and the Prisoner of Azkaban (video game) (Appears on a Famous Wizard Card)