Find A Grave, database and images (https://www.findagrave.com : accessed 17 April 2018), memorial page for Nancy Luvenia Mansell Barnwell (16 Oct 1854–25 Aug 1943), Find A Grave Memorial no. 74418729, citing Fain Cemetery, Calhoun, Gordon County, Georgia, USA ; Maintained by Mike Borja (contributor 47317107)
It may be possible to confirm family relationships with Nancy by comparing test results with other carriers of her ancestors' mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Nancy: