Prince William made a heartbreaking promise to his mother, Princess Diana, after her HRH title was taken away following her divorce from the-then Prince Charles in 1996, just a year before her tragic death.
On Charles and Diana's wedding day in 1981, Lady Diana Spencer became Her Royal Highness. But while the Queen was said to be happy for Diana to keep her HRH title following the divorce, Charles was not. In the end, Charles got his way and Diana became Diana, Princess of Wales.
