King George V and Queen Mary consort of Britain in centre celebrating the Silver Jubilee, with their five adult children, top left Princess Mary, Princess Royal and Countess of Harewood only daughter, (1897 ? 1965), top left Prince Edward of Wales (future Edward VIII) and then Duke of Windsor, (1894 ? 1972), bottom left The Duke of York (future George VI), (1895 ? 1952), middle bottom Prince Henry, Duke of Gloucester, (1900 ? 1974), bottom right Prince George, Duke of Kent, (1902 - 1942). They had another son that died at the age of thirteen, Prince John.