The maternal relationship between Archange Saucier and her daughter
Susanne Rivard dit Lavigne is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant DD.
The segmental (via DNA segment triangulation) and total DNA shared between DD and other confirmed descendants of
Joseph Marie Saucier/
Marie-Genevieve Tremblay is consistent with the expected ranges for their respective relationships. Since DD descends from Joseph Marie Saucier/Marie-Genevieve Tremblay through Archange Saucier and her daughter Susanne Rivard dit Lavigne, the presence of significant shared DNA between DD and other known descendants of Joseph Marie Saucier/Marie-Genevieve Tremblay validates the generational links along this maternal line.
This supports the conclusion that DNA was passed from MRCA couple Joseph Marie Saucier/Marie-Genevieve Tremblay through Archange Saucier to Susanne Rivard dit Lavigne, and ultimately to DD, confirming this direct ancestral connection through multiple generations.