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.
Family of Martin Van Buren
Martin Van Buren, the eighth President of the United States, was the son of Abraham Van Buren (1737–1817) and Maria Hoes (or Goes) Van Alen (1747–1818). Van Buren married Hannah Hoes, his childhood sweetheart and a daughter of his first cousin, on February 21, 1807, in Catskill, New York. The couple had five children, four of whom lived to adulthood: Abraham (1807–1873), John (1810–1866), Martin, Jr. (1812–1855), Winfield Scott (born and died in 1814), and Smith Thompson (1817–1876). Hannah Van Buren died in 1819, eighteen years before Martin became President. Martin Van Buren never remarried. During his term, his daughter-in-law, Angelica, performed the role of hostess of the White House and First Lady of the United States.