Funeral of Diana, Princess of Wales Shakespeare's "Hamlet", was sung by the Westminster Abbey Choir conducted by Martin Neary as Diana's cortège departed from the main nave of Westminster Abbey. On the same day, a memorial service was held at Washington National Cathedral and was attended by 2,170 people including the British ambassador John Kerr, the U.S. ambassador to the United Nations Bill Richardson, and chairman of "The Washington Post" Co. executive committee Katharine Graham. On Sunday, 7 September, an additional service for Diana was performed at Westminster Abbey in response to popular demand. The burial occurred privately later the same day. Diana's former husband, sons,
Diana, Princess of Wales he pushed me down again." Charles's aunt, Princess Margaret, burned "highly personal" letters that Diana had written to the Queen Mother in 1993. Biographer William Shawcross considered Margaret's action to be "understandable" as she was "protecting her mother and other members of the family", but "regrettable from a historical viewpoint". Although she blamed Camilla Parker Bowles for her marital troubles, Diana began to believe that her husband had also been involved in other affairs. In October 1993, the Princess wrote to her butler Paul Burrell, telling him that she believed her husband was now in love with his personal assistant