This info from a relative: "Charles and Matilda are buried in Little Prairie Cemetery, Jackson Township, Effingham County. We were there a few years ago and visited with the person who keeps the cemetery records. There is no stone for Matilda, but Charles has a stone that appears to be government issue as he was in the Civil War."
Find A Grave, database and images (https://www.findagrave.com/memorial/130828326), memorial page for Matilda C Smith Smith (1837–May 1880), Find A Grave Memorial no. 130828326, citing Little Prairie Cemetery, Effingham County, Illinois, USA ; Maintained by Nick OBrien (contributor 47285819) .
Name: Matilda Smith; Event Type: Census; Event Date: 1860; Event Place: Union Township, Fulton, Arkansas, United States; Gender: Female; Age: 22; Race: White; Birth Year (Estimated): 1838; Page: 22.
Charles Smith M 23 Tennessee; Matilda Smith F 22 ; Martha Smith F 4 Arkansas; Nancy Smith F 1 .
Household ID: 25; Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M653; Affiliate Film Number: 41; GS Film Number: 803041; Digital Folder Number: 005165612; Image Number: 00432.
Citing this Record: "United States Census, 1860", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M8W9-9KV : 13 December 2017), Nancy Smith in entry for Charles Smith, 1860.
Name: Matilda C Smith; Event Type: Death; Event Date: May 1880; Event Place: Illinois, United States; Event Place: Illinois, United States; Residence Place: Jackson, Effingham; Gender: Female; Age: 43; Race: White; Birth Year (Estimated): 1837; Birthplace: Tenn.
Affiliate Publication Number: T1133; Affiliate Publication Title: Nonpopulation Census Schedules for Illinois, 1850-1880.; Affiliate Film Number: 62; Digital Folder Number: 007282687; Image Number: 00113;
Citing this Record: "Illinois Mortality Schedules, 1850-1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QL91-NQMK : 16 March 2018), Matilda C Smith, death May 1880, Illinois, United States; citing Pub. T1133 Nonpopulation Census Schedules for Illinois, 1850-1880., Film 62, NARA microfilm publications T1133 (Washington, D.C.: National Archives and Records Administration, n.d.); FamilySearch digital folder 007282687.
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