John Isaac DE GRAFF, Congress, NY (1783-1848)

DE GRAFF, John Isaac, a Representative from New York; born in Schenectady, N.Y., October 2, 1783; attended the common schools and Union College, Schenectady, N.Y., in 1811; engaged in mercantile pursuits in Schenectady; served in the War of 1812; elected as a Jacksonian to the Twentieth Congress (March 4, 1827-March 3, 1829); mayor of Schenectady 1832-1834 and again in 1836; elected as a Democrat to the Twenty-fifth Congress (March 4, 1837-March 3, 1839); was not a candidate for renomination; engaged in mercantile pursuits; interested in the building of the Mohawk & Hudson Railroad; again served as mayor of Schenectady in 1842 and 1845; engaged in banking until his death in Schenectady, N.Y., July 26, 1848; interment in Vale Cemetery.

Source: Biographical Directory of the United States Congress, 1771-Present