List of presidents of the United States by age
The median age upon accession to the presidency is 55 years and 3 months. This is how old Lyndon B. Johnson was at the time of his inauguration. The youngest person to assume the office was Theodore Roosevelt, who became president at the age of , following William McKinley's assassination; the oldest was Donald Trump, who was old at his inauguration. The youngest person to be elected president was John F. Kennedy, at of age on election day; the oldest was Ronald Reagan, who was old at the time of his election to a second term.
John Thornton Augustine Washington
John Thornton Augustine Washington (May 20, 1783 – October 9, 1841) was a prominent Virginia (now West Virginia) landowner, farmer, and statesman and a member of the Washington family. Washington was a grandnephew of George Washington, first President of the United States.