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13 fascinating facts about Prince William
On June 3 1991, William was admitted to Royal Berkshire Hospital after being accidentally hit on the forehead by a fellow student with a golf club. He did not lose consciousness, but suffered a depressed fracture of the skull, and was operated on at Great Ormond Street Hospital, resulting in a permanent scar. In 2009, he described this scar a "Harry Potter scar". He said: "I call it that because it glows sometimes and some people notice it, other times they don't notice it at all".