Frederic de Peyster II was a New York City lawyer and prominent member of the De Peyster family.

Johnston Livingston de Peyster was a soldier in the Union Army during the American Civil War and later a member of the New York State Assembly from Dutchess County, New York. The son of a wealthy old Dutchess County family, de Peyster joined the Union Army at the age of eighteen. He saw service in the eastern theater, and is best remembered for raising the first Union flag over the Confederate capitol of Richmond, Virginia, after its fall in 1865.