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