The maternal relationship between Harriet M Smith and her son
Garwood Smith Thompkins is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant RT.
The segmental (via DNA segment triangulation) and total DNA shared between RT and other confirmed descendants of
Isaac Sanford Smith/
Mary Taylor is consistent with the expected ranges for their respective relationships. Since RT descends from Isaac Sanford Smith/Mary Taylor through Harriet M Smith and her son Garwood Smith Thompkins, the presence of significant shared DNA between RT and other known descendants of Isaac Sanford Smith/Mary Taylor validates the generational links along this maternal line.
This supports the conclusion that DNA was passed from MRCA couple Isaac Sanford Smith/Mary Taylor through Harriet M Smith to Garwood Smith Thompkins, and ultimately to RT, confirming this direct ancestral connection through multiple generations.