Thank you to Kara Lemons for creating WikiTree profile Allendale-3 through the import of Lemons Harrison Family Tree.ged on Aug 31, 2013. Click to the Changes page for the details of edits by Kara and others.
Mary was born about 1770. Mary Allendell ... She passed away before 1854. 
No more info is currently available for Mary Allendell. Can you add to her biography?
Trenna Moore, firsthand knowledge. Click the Changes tab for the details of edits by Trenna and others.
It may be possible to confirm family relationships with Polly 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 Polly: