John McLean was an American jurist and politician who served in the United States Congress, as U.S. Postmaster General, and as a justice of the Ohio and United States Supreme Courts. He was often discussed for the Whig Party nominations for president, and is also one of the few people who served in all three branches of government. Born: March 11, 1785 Died: April 4, 1861 In office: March 7, 1829 – April 4, 1861 Wiki link