John Watts de Peyster

John Watts de Peyster
Born(1821-03-09)March 9, 1821
DiedMay 4, 1907(1907-05-04) (aged 86)
New York, New York, U.S.
Allegiance United States
Branch New York State Militia
Service years1845–1866
RankBrevet Major-General
ConflictsMexican–American War
American Civil War
SpouseEstelle Livingston
ChildrenJohn Watts de Peyster, Jr. (son)
Other workHistorian, lawyer, writer

John Watts de Peyster, Sr. (March 9, 1821 – May 4, 1907) was an American author on the art of war, philanthropist, and the Adjutant General of New York. He served in the New York State Militia during the Mexican–American War.