J.K. Rowling's pen name "J.K." honors her grandmother Kathleen.
Hidden characters named "Harry" in the series.
J.K. Rowling received an Honorary Knighthood from Prince William.
Dobby's character was changed after a fan's request.
Hermione's S.P.E.W. cause didn't take off in the wizarding world.
"Hogwarts" exists as a hamlet in Scotland.