"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MS1Q-YVR : accessed 10 February 2018), Mary A Hoodson in household of William J Hoodson, Sandy Ridge Township (north part), Union, North Carolina, United States; citing enumeration district (ED) 142, sheet 6B, family 112, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,220.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:ML9N-SQV : accessed 17 April 2017), Mary A Hudson in household of William J Hudson, Monroe Ward 4, Union, North Carolina, United States; citing enumeration district (ED) ED 130, sheet 14B, family 117, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1134; FHL microfilm 1,375,147.
It may be possible to confirm family relationships with Mary 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 Mary: