Nancy was born about 1810. She was age 61 in the 1870 census.  In the 1880 census she was 70. 
Featt Woodall married Nancy Brumfield 18 December 1837 in Pittsylvania County, Virginia. 
On May 1, 1841 Thos. K. Brumfield, Eppy N. Brumfield, Lafayette Woodall and
Nancy his wife, David Mayhew & Meeky his wife, all of Pittsylvania Co..
Harrison Francis and Frances his wife, of Halifax all heirs and legatees of
Susannah Brumfield deceased--sold 50 acres on Cherrystone Creek to Geo.
↑ "United States Census, 1870," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MFPM-MTT : 17 October 2014), Nancy Woodall in household of Lafayette Woodall, Virginia, United States; citing p. 64, family 438, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 553,169.
↑ "United States Census, 1880," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MC5T-1GR : 24 December 2015), Nancy Woodall in household of Lafayette Woodall, Mayo River, Patrick, Virginia, United States; citing enumeration district ED 159, sheet 69B, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 1383; FHL microfilm 1,255,383.
↑ "Virginia Marriages, 1785-1940," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XR3G-Z2Z : 5 December 2014), Featt Woodall and Nancy Brumfield, 18 Dec 1837; citing Pittsylvania, Virginia, reference Page 116; FHL microfilm 33,326.
It may be possible to confirm family relationships with Nancy by comparing test results with other carriers of her 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: