Was it difficult for you to remember their names? If yes, let's have a brief look into history.

George Clinton

He was an American statesman and one of the Founding Fathers. He served as Vice President of the US from 1805 to 1809 under President Thomas Jefferson (3rd US President, 1801-1809). He also served as Vice President of the US from 1809-1812 under President James Madison (4th US President, 1809-1817).

John C. Calhoun

He also was an American statesman and political theorist from South Carolina. He served as Vice President of the US from 1825-1829 under President John Quincy Adams (6th US President, 1825-1829). He also served as Vice President of the US from 1829-1832 under President Andrew Jackson (7th US President, 1829-1837).