The C could refer to Dick Cheney, assuming this is an old question.
John C. Breckinridge was Vice President from 1857-1861 under President James Buchanan.
John C. Breckinridge, the 14th vice-President of the United States, was born in Lexington, Kentucky.
John C. Calhoun
Both the youngest U.S. Vice President, John C. Breckinridge, and the oldest, Alben W. Barkley, were from Kentucky.
John C. Calhoun resigned as vice president late in his last term in order to become a US Senator.
As of 2009, Joseph Biden is the 47th US Vice President. Some Presidents have had more than one Vice President, , two vice presidents have served under more than one president (George Clinton and John C. Calhoun) and four (Tyler, Fillmore, A. Johnson, and Arthur) had no Vice President during their successions.
President Andrew Jackson served two complete terms as US President, from 1829 to 1837. His first Vice-President was John C. Calhoun, who resigned in 1833 and was replaced by Martin Van Buren.
because there is a president and a vice president thats why he said we have two presidents
James Buchanan's vice president was John C. Breckinridge of Kentucky.
John C. Calhoun was 7th Vice President of the United States and from South Carolina. Calhoun was Vice President to both John Quincy Adams and Andrew Jackson. Calhoun tried to run for President but was unable to gain the nomination, losing to Polk.
John C. Breckinridge
U. S. Secretary of War