John Quincy Adams - 6th President of U.S. - son of John Adams, (2nd President). He served as Secretary of State under James Monroe, and is regarded as one of the greatest diplomats in American history. He reportedly had the highest IQ of any American President. He died in 1848 at the age of 81.
John Quincy Adams, son of John and Abigail Adams, served as the sixth President of the United States from 1825 to 1829. A member of multiple political parties over the years, he also served as a diplomat, a Senator, and a member of the House of Representatives. Learn more: http://go.wh.gov/hiHBWs