During the signing potion of Jo Rowling’s A Casual Vacancy event, HPA staffer asked Jo one of the remaining burning questions in the Harry Potter fandom…
Breaking! HPA staffer Kaci asked Jo what house Umbridge is in. Verdict: Slytherin. #JKRlive
— TheHPAlliance (@TheHPAlliance) October 17, 2012
And there you have it, folks. Long suspected, finally confirmed. Thanks Kaci for asking the probing questions!