The maternal relationship between Maria Fessler and her son PM is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant LB.

The segmental (via DNA segment triangulation) and total DNA shared between LB and other confirmed descendants of Johann Baptist Fessler/Elisabetha Maria Schmitz is consistent with the expected ranges for their respective relationships. Since LB descends from Johann Baptist Fessler/Elisabetha Maria Schmitz through Maria Fessler and her son PM, the presence of significant shared DNA between LB and other known descendants of Johann Baptist Fessler/Elisabetha Maria Schmitz validates the generational links along this maternal line.

This supports the conclusion that DNA was passed from MRCA couple Johann Baptist Fessler/Elisabetha Maria Schmitz through Maria Fessler to PM, and ultimately to LB, confirming this direct ancestral connection through multiple generations.