Pilgrims Welcome New U.S. Ambassador -- From left to right :- Sir Harry Brittain who since 1902 has been the active Head of the Pilgrims. Mr. Aldrich. Sir Campbell Stuart, the Chairman of the Pilgrims. The Pilgrims - the famous society for promoting Anglo-American friendship - this evening gave a dinner in honour of the new American Ambassador to the court of St. James, Mr. Winthrop W. Aldrich. The dinner also marked the Pilgrim's fiftieth anniversary. March 19, 1953. (Photo by Paul Popper).