Find A Grave, database and images (https://www.findagrave.com/memorial/80579060 : accessed 03 June 2019), memorial page for Elizabeth Thrasher Allred (1760–1842), Find A Grave Memorial no. 80579060, ; Maintained by David Metcalf (contributor 47040881) Unknown, who reports a date and place of burial unavailable. Note: the dates in this reference seem to be rough estimates.
"Illinois, Hancock County, Nauvoo Community Project, 1839-1846 (BYU Center for Family History and Genealogy)," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QL3Z-T3QC : 23 February 2018), Elizabeth Thrasher in entry for Isaac Allred, from 1839 to 1846; citing Residence, Nauvoo, Hancock, Illinois, United States, from 1839 to 1846, Citing BYU Center for Family History and Genealogy, Provo, Utah.
It may be possible to confirm family relationships with Elizabeth 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 Elizabeth: