There is some discrepancy in the date of her birth-- some sources have it as 14 Aug 1828, others as 1836. 
Thank you to Dawn Westerling for creating WikiTree profile Allard-468 through the import of The Opperman_Westerling Tree.ged on May 28, 2013. Click to the Changes page for the details of edits by Dawn and others.
It may be possible to confirm family relationships with Nancy 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 Nancy: