During the Second Wizarding War, when Lord Voldemort was in control of the Ministry of Magic, the Cattermoles came under scrutiny because Mary Cattermole is a Muggle-born witch. Harry Potter, Hermione Granger, and Ron Weasley freed her from the Muggle-Born Registration Commission and advised the Cattermoles to flee the country with the Death Eaters were in power. It is unknown if they took this advice.
- Alfred Cattermole — son of Reginald and Mary Cattermole
- Ellie Cattermole — daughter of Reginald and Mary Cattermole
- Maisie Cattermole — daughter of Reginald and Mary Cattermole
- Mary Cattermole — a Muggle-born witch
- Reginald Cattermole — a Ministry of Magic employee