Percival Wulfric Brian Dumbledore

Fictional Character Appearing in the Harry Potter Book Series:

DO NOT merge with real people or into the "big tree"

"...Percival Dumbledore (fl. 1881—1890) was the father of Albus Dumbledore, the noted Headmaster of Hogwarts School of Witchcraft and Wizardry. He and his wife Kendra had three children: Albus, Aberforth, and Ariana.

At the age of six, Percival's daughter Ariana was assaulted by three Muggle boys. The incident left her permanently traumatised and unable to control her magic powers. Percival, in a fit of vengeful rage, attacked her assailants. This resulted in his arrest and conviction by the Ministry of Magic. He was sentenced to Azkaban, where he later died. Percival never admitted the reasons for his attack on the Muggles. This was largely due to his fear that if the Ministry found out about his daughter's delicate condition, they would send her to St. Mungo's Hospital for Magical Maladies and Injuries for the rest of her life, effectively locking her away permanently as a hazard to the International Statute of Wizarding Secrecy. Percival's attack on the Muggle children led many to believe that he was a supporter of the notion of blood purity. However, this was almost certainly untrue as Percival's own wife was a Muggle-born witch. However, the Dumbledore family kept its secrets well, and Percival's reputation would remain tarnished even after the death of his 115-year-old son, Albus.

When Albus Dumbledore put on the Peverell Ring, with hopes that using the Resurrection Stone would allow him to see his loved ones once more, one of the people he hoped to see — and apologize to — was his father..."

SOURCE: http://harrypotter.wikia.com/wiki/Percival_Dumbledore