Question: David Frederick Wallace was the brother of a First Lady who was married to which President?
Sentence (from "Bess Truman"): Elizabeth Virginia "Bess" Truman (born Wallace; February 13, 1885 – October 18, 1982) was the wife of U.S. President Harry S. Truman and First Lady of the United States from 1945 to 1953.
Relevant evidence: Yes