Find A Grave, database and images (https://www.findagrave.com : accessed 29 January 2019), memorial page for Mary Susan Watson McDonald (13 Jan 1842–1920), Find A Grave Memorial no. 36145313, citing Watson-Green Cemetery, Drewry, Monroe County, Alabama, USA ; Maintained by Melody Ridgeway (contributor 47187686) .
It may be possible to confirm family relationships with Mary 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 Mary: