"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MSDS-4B4 : accessed 15 November 2018), Blanch Night in household of Thomas T Night, Civil District 4 Midway town, Houston, Tennessee, United States; citing enumeration district (ED) 12, sheet 21A, family 429, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,579.
It may be possible to confirm family relationships with Blanche 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 Blanche: