The United States (US) Presidents who are related to each other
John Quincy Adams (the 6th president) and John Adams (the 2nd president). (father and son)
George W. Bush (the 43rd president) and George Bush (the 41st president). (father and son)
Benjamin Harrison (the 23rd president) and William Henry Harrison (the 9th president). (grandfather and grandson)
James Madison (4th president) and Zachary Taylor (12th president) were second cousins.
Franklin Delano Roosevelt (32nd president) was a fifth cousin of Theodore Roosevelt (26th president). According to Genealogists, FDR was distantly related to a total of 11 U.S. presidents, five(5) by blood and six (6) by marriage: John Adams, John Quincy Adams, Ulysses Grant, William Henry Harrison, Benjamin Harrison, James Madison, Theodore Roosevelt, William Taft, Zachary Taylor, Martin Van Buren, and George Washington.