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.
Mary Ball Washington
Mary managed the family estate and 276 acres of Ferry Farm (a plantation) with the help of others until her eldest son came of age and well beyond. She lived to see that son, George Washington, command the Continental Army to independence and be inaugurated as the first President of the United States in 1789. After learning that he had been elected President in April 1789, George Washington traveled from Mount Vernon to visit his mother in Fredericksburg. He was accompanied by Martha Washington's grandson George Washington Parke Custis. George Washington knew his Mother was ill. She was suffering from breast cancer, the disease to which she eventually succumbed, but, he sought her blessing as he embarked on another service to his Country: the new concept of "The Presidency of the United States."