Benjamin Ellicott (April 17, 1765 – December 10, 1827) was a surveyor, a county judge and a member of the United States House of Representatives from the State of New York. Born in Bucks County, Pennsylvania in 1765, Benjamin Ellicott accompanied his brothers Andrew and Joseph Ellicott in 1789 to the British Province of Upper Canada in a survey to determine the western boundary of the State of New York. During 1791, 1792 and 1793, he assisted his brothers in the survey and mapping of the future City of Washington and in the survey of the original boundaries of the 100 square miles (260 km2) District of Columbia (see Boundary Markers of the Original District of Columbia). During November–December 1792, he led a survey that helped settle a boundary dispute within the present Ontario County i