Stock Photo - Princess And Duke Leave St. George's -- Her royal highness Princess Elizabeth and her husband, the Duke of Edinburgh, robed as knights of the garter, seen leaving the St. George's chapel after the ceremony today April 23. At bottom of picture is Queen Mary escorted by the Duke of Gloucester (right). Behind Princess Elizabeth are (left to right) Duchess of Gloucester, Princess Margaret, and Duchess of Kent. Among the Knights lining the steps are the Earl of Athlone (top left); Duke of Norfolk (third from left); and Field Marshal Viscount Alexander (extreme right). A brilliant ceremony took place at St. George's chape, Windsor, today April 23, when knights of the most noble order of the Gartor, led by the King and Queen, assembled for the 600th Anniversary of the foundation of the order. April 03, 1947.