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BROMONT, CANADA - JULY 17: Prince Philip, Duke of Edinburgh, Princess Anne, Princess Royal, Mark Phillips, Prince Edward, Earl of Wessex, Queen Elizabeth ll, Prince Andrew and Prince Charles, Prince of Wales pose together during the Olympic Games in July 1976 in Bromont, Canada. (Photo by Anwar Hussein/Getty Images)

BROMONT, CANADA - JULY 17:  Prince Philip, Duke of Edinburgh, Princess Anne, Princess Royal, Mark Phillips, Prince Edward, Earl of Wessex, Queen Elizabeth ll, Prince Andrew and Prince Charles, Prince of Wales pose together during the Olympic Games in July 1976 in Bromont, Canada.  (Photo by Anwar Hussein/Getty Images)