Unidentified Mould-on-the-Wold boys

Three Muggle boys who lived in the town of Godric's Hollow during the nineteenth century bore witness to Ariana Dumbledore, a young witch who lived with her family nearby, performing accidental magic, which scared them into "trying to stop the little freak from doing it," by abusing her, after which point she was mentally scarred, which resulted in a lack of ability to control her magic. Ariana's father, Percival, went after the boys and tortured them, possibly through use of the Cruciatus Curse, which resulted in the Ministry of Magic sending him to Azkaban, because he could not satisfactorly explain why he had done it, knowing that his daughter would be taken to St Mungo's Hospital for Magical Maladies and Injuries for the rest of her life.

Appearances

 * Harry Potter and the Deathly Hallows