I believe John Smelser and Nancy Priest can be found in the 1900 Federal Census for Roaring River, Barry, Missouri. The listing is for John F. Smelser b. May 1853 and Callie Smelser b. Jan 1869. However, I located another entry in a OneWorld Family Tree that attributes Nancy Catherine Priest's birthday as Jan 16, 1869 and a location of death as Barry, Missouri. That would at least provide a possible clue that the "Callie" listed in that 1900 census is Nancy Priest and that the John F. Smelser b. May 1853 is actually John T. Smelser b. May 1853 West Virginia.