Preceded by William Wilkins Succeeded by Simon Cameron Born April 23 , 1791 ( 1791-04-23 ) Mercersburg , Pennsylvania Died June 1 , 1868 (age 77) Lancaster Political party Democratic Spouse(s) None ( Bachelor ) Occupation Lawyer , Diplomat Religion Presbyterian Signature James Buchanan ( April 23 , 1791 – June 1 , 1868 )