William Bayard Cutting (1878--1910), who was secretary to the U.S. embassy to the Court of St. James's. He married 30 April 1901, Lady Sybil Marjorie Cuffe, daughter of Hamilton John Agmondesham Cuffe, 5th Earl of Desart and Lady Margaret Joan Lascelles. She was the mother of Iris Origo, the Marchesa Origo, the author of many books.
Sybil Marjorie Cuffe
Lady Margaret Joan Lascelles