Margaret Truman
Mary Margaret Truman Daniel (February 17, 1924 – January 29, 2008), also known as Margaret Truman or Margaret Daniel, was an American singer who later became the successful author of a series of murder mysteries and a number of works on U.S. First Ladies and First Families, including a biography of her father, President Harry S. Truman. The only child of Harry Truman and First Lady Bess Truman, she was "a witty, hard-working Midwestern girl with singing talent who was neither particularly pretty nor terribly plain."