James Duncan Graham was born 4 April 1799 in Prince William County, Va. He graduated from the United States Military Academy in 1817 and served in the United States Army as a topographical engineer. He directed the re-survey of the Mason-Dixon line and served on the boundary commission for the United States and Canada and the United States and Mexico. He supervised harbor improvements on the Great Lakes, discovering the lunar tide there. He married twice, to Charlotte Meade and after her death, to Frances Wickham. He died 28 December 1865 in Boston, Mass. Further information about this individual or organization may be available in the Special Collections Research Center Wiki: http://scrc.swem.wm.edu/wiki/index.php/James Duncan Graham.