Party Goers -- Princess Margaret and her escort, Lord Plunkett, are in smiling mood in this picture made in November, 1951, as they left British embassy in Paris enroute to a party at the Chantilly home of Sir Duff Cooper and Lady Diana Cooper, Yesterday Lord Plunkett, tall and handsome captain of the Irish Guards, came to Sandringham as the house guest of princess Margaret and her mother at the royal lodge.The 30-year-old Lord Plunkett has been Margaret's frequent escort to West End theater parties in London. January 9, 1954. (Photo by AP Wirephoto).