"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MHSS-ZDZ : accessed 10 September 2015), Sarah A Fiscus in household of James W Fiscus, Jefferson, Owen, Indiana, United States; citing enumeration district 257, sheet 359D, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0303; FHL microfilm 1,254,303.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M9MK-5VR : accessed 10 September 2015), Sarah A. Williams in household of Charley Williams, Marion Township, Owen, Indiana, United States; citing sheet 2B, family 37, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,240,396.
It may be possible to confirm family relationships with Sarah 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 Sarah: