The maternal relationship between Mary Grace Hubert and her son PH is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant PH.

The segmental (via DNA segment triangulation) and total DNA shared between PH and other confirmed descendants of Benjamin Hubert/Susan McCollum is consistent with the expected ranges for their respective relationships. Since PH descends from Benjamin Hubert/Susan McCollum through Mary Grace Hubert and her son PH, the presence of significant shared DNA between PH and other known descendants of Benjamin Hubert/Susan McCollum validates the generational links along this maternal line.

This supports the conclusion that DNA was passed from MRCA couple Benjamin Hubert/Susan McCollum through Mary Grace Hubert to PH, and ultimately to PH, confirming this direct ancestral connection through multiple generations.