Benedict Arnold gives detailed plans of West Point to Major John André. Three days later, André is captured with papers revealing that Arnold was planning to surrender West Point to the British.
May 1 – John McKinley, U.S. Senator from Alabama from 1826 to 1831 and in 1837; Associate Justice of the Supreme Court of the U.S. from 1837 to 1852 (died 1852)
June 21 – Martin D. Hardin, U.S. Senator from Kentucky from 1816 to 1817 (died 1823)
July 9 – Ephraim Bateman, U.S. Senator from New Jersey from 1826 to 1829 (died 1829)
August 20 – William Woodbridge, Governor of Michigan from 1840 to 1841 and U.S. Senator from Michigan from 1841 to 1847 (died 1861)
August 19 – Johann de Kalb, Franconian-French major general in the Continental Army, mortally wounded in Battle of Camden (born 1721 in Principality of Bayreuth)
September 8 – Enoch Poor, brigadier general in the Continental Army (born 1736)