Percival Dumbledore

Percival Dumbledore is the father of Albus Dumbledore, the noted Headmaster of Hogwarts School of Witchcraft and Wizardry and mastermind behind the final destruction of Lord Voldemort. He and his wife Kendra had three children, Albus, Aberforth, and Ariana.

When Percival's daughter Ariana was assaulted and emotionally scarred by three Muggle boys, he attacked them and was arrested and convicted by the Ministry of Magic and sent to the wizard prison Azkaban, where he later died.