Our second President John Adams died of old age, at 91 years. There weren't any diagnosed health issues in that time. He was at his home surrounded by his family on July 4, 1826 also the 50th anniversary of American Independence. His dear friend and our third president Thomas Jefferson died the same day. They were the last surviving men of the second Continental Congress of 1775 and 1776.
ANSWER by kelly
Both on July 4 of the same year!
He didn't.
John T. Adams died in 1939.
John Clayton Adams died in 1906.
John Adams Whipple died in 1891.
John Adams Jackson died in 1879.
John Adams Gilmer died in 1868.
John Adams Harper died in 1816.
John J. Adams died in 1919.
John Jay Adams died in 1926.
John Worthington Adams died in 1837.
John G. Adams died in 2003.