David Davis was an American politician and jurist who was a U.S. senator from Illinois and associate justice of the United States Supreme Court. He also served as Abraham Lincoln's campaign manager at the 1860 Republican National Convention, engineering Lincoln's successful nomination for president by that party. Born: March 9, 1815 Died: June 26, 1886 In office: October 17, 1862 – March 4, 1877 Wiki link