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Some same her maiden name was Nelson.
And, that she was the daughter of Andrew Nelson, a family friend of Nathan's grandfather, John, 1764-1845. Both served in the same American Virginia militia unit at the Battle of Guilford Courthouse, N.C.
It may be possible to confirm family relationships with Martha 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 Martha: