ISAAC ROBERDEAU - (1773-1829) - Army Engineer, born in
Philadelphia, Pa. Educated partly here and partly in
England, was assistant engineer engaged in laying out
Wasington, D.C. at request of General Washington (1891).
Then built canals and (1813) made major and topographical
engineer in the U.S. Regular army during War of 1812, this
corps being then just constituted by appointment of four
majors and four captains. At close of war, was ordered to
survey boundary line between of the U.S. and Canada, under
Treaty of Ghent. Was in charge of this survey of nearly
900 miles of length. In 1818, organized the bureau of
topographical engneers in War Department and was in charge
until his death as Colonel.