Professor Albus Percival Wulfric Brian Dumbledore, was a half-blood wizard. He was the Transfiguration Professor, and later Headmaster of Hogwarts School of Witchcraft and Wizardry. Professor Dumbledore also served as Supreme Mugwump of the International Confederation of Wizards and Chief Warlock of the Wizengamot
I'm one of those people who is still annoyed about that tiny but in a way significant detail. It makes Dumbledore more eccentric and off his rocker than he really was. It bothers me, and it always will. If that makes me a crazy HP fan, then so be it.