The maternal relationship between Margaret L Gibson and her son TLH is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant TH.
The segmental (via DNA segment triangulation) and total DNA shared between TH and other confirmed descendants of
Margaret Hartman is consistent with the expected ranges for their respective relationships. Since TH descends from Margaret Hartman through Margaret L Gibson and her son TLH, the presence of significant shared DNA between TH and other known descendants of Margaret Hartman validates the generational links along this maternal line.
This supports the conclusion that DNA was passed from MRCA Margaret Hartman through Margaret L Gibson to TLH, and ultimately to TH, confirming this direct ancestral connection through multiple generations.