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.
Lynda Bird Johnson Robb
Lynda Bird Johnson Robb (born March 19, 1944) is an American chairwoman who served as chairwoman of the Board of Reading is Fundamental, the nation's largest children's literacy organization, as well as chairwoman of the President's Advisory Committee for Women. She is also a magazine editor who served as First Lady of Virginia from 1982 to 1986, before that as Second Lady of Virginia from 1978 to 1982. She is the elder of the two daughters of former United States President Lyndon Baines Johnson and former First Lady Lady Bird Johnson. She became the oldest living child of a U.S. President following the death of John Eisenhower on December 21, 2013.