10.06.1967 (56 years)
John Joseph Kelly (June 24, 1898 – November 20, 1957) was a United States Marine who was awarded both the Army and Navy Medals of Honor for his heroic actions on October 13, 1918, at the Battle of Blanc Mont Ridge, France during World War I. He was the last surviving of 19 two-time Medal of Honor recipients when he died.