Havelock Sweeting (1634–1710) was a wizard and Magizoologist well-known for being an expert on unicorns. He started many unicorn reservations in Britain. For his dedication to Unicorns, he was immortalised on a Chocolate Frog Card.
- 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)