July 1922: Princess Sophie of Greece, sister of Prince Philip, Duke of Edinburgh, at the wedding of Lord Louis Mountabatten to the Countess of Ashley. She married Prince Christopher of Hesse, and in 1946 married Prince George William of Hanover. (Photo by Topical Press Agency/Getty Images)

July 1922:  Princess Sophie of Greece, sister of Prince Philip, Duke of Edinburgh, at the wedding of Lord Louis Mountabatten to the Countess of Ashley.  She married Prince Christopher of Hesse, and in 1946 married Prince George William of Hanover.  (Photo by Topical Press Agency/Getty Images)