FamilySearch.org profile: Sarah Keesee; free-use site, login required to view profile and source documents; profile created through membership collaboration; date accessed: 3 Jun 2019
"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M65V-TBT : 12 April 2016), Sarah Cozer in household of Booker Cozer, Pike county, Pike, Kentucky, United States; citing family 658, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
It may be possible to confirm family relationships with Sarah 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 Sarah: