Richard Mifflin Kleberg Sr. (November 18, 1887 – May 8, 1955), a Democrat, was a seven-term member of the United States House of Representatives from Texas's 14th congressional district over the period 1931–1945 and an heir to the King Ranch in South Texas. He was first elected in 1931 in a special election called due to the death of Harry M. Wurzbach. His election caused the Democratic party to achieve an absolute majority in the House of Representatives --- a majority it retained for all but four of the next sixty-three years. He was elected unopposed in 1940 and 1942. Lyndon B. Johnson served as a congressional secretary under Kleberg from 1931 until his appointment as head of the Texas National Youth Administration in 1935. As described by Johnson biographer Robert Caro, Kleberg was a