QUIZ: How Well Do You Know The U.S. Presidents? Culture July 10, 2020 Which president’s grandfather was also president? 75% Retry Correct Incorrect Benjamin Harrison’s grandfather was President William Henry Harrison. Next Bettmann/Getty Images Bettmann/Getty Images Which president’s grandfather was also president? John F. Kennedy Benjamin Harrison George W. Bush Franklin D. Roosevelt 75% Scroll down to continue on! Next