The two profiles for the daughter of James Gassaway were merged; however, there was some discrepancies. I've transferred the information from Find-a-Grave to this profile, but the original information entered was:
Birth: 1777 in South Carolina
Death: 1852 in Monroe County, Mississippi
The link to Ancestry.com link below no longer works, and the Find-a-Grave memorial doesn't cite any sources.
It may be possible to confirm family relationships with Nancy 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 Nancy: