Original: John Caldwell Calhoun ( March 18 , 1782 -- March 31 , 1850 ) was the 7th Vice President of the United States and a leading Southern politician from South Carolina during the first half of the 19th century .
Simplified: John Caldwell Calhoun ( March 18 , 1782 -- March 31 , 1850 ) was the vice-president for Andrew Jackson , an American President .