died of unknown causes at approximately age 42. "The cause and exact date of his death are unknown, as is the place of his burial. This seems a sadly undocumented end to one of America’s least recognized, yet most important sergeants"(Szasz). NOTE: John Ordway is buried in the church cemetery in Hebron, New Hampshire. References External links Lewis and Clark Expedition people 1775 births 1817 deaths People from Hebron, New Hampshire People from New Madrid County, Missouri People from Dunbarton, New Hampshire