Prince Charles, Prince Philip and Queen Elizabeth II arrive for the Maundy Thursday service at Westminster Abbey on 11th April 1968. (Photo by Ray Bellisario/Popperfoto via Getty Images/Getty Images)
Prince Charles, Prince Philip and Queen Elizabeth II arrive for the Maundy Thursday service at Westminster Abbey on 11th April 1968. (Photo by Ray Bellisario/Popperfoto via Getty Images/Getty Images)