The paternal relationship between Matthew J Justin and his son
Matthias Justin is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant GJ.
The segmental (via DNA segment triangulation) and total DNA shared between GJ and other confirmed descendants of
Johann Baptist Fessler/
Elisabetha Maria Schmitz is consistent with the expected ranges for their respective relationships. Since GJ descends from Johann Baptist Fessler/Elisabetha Maria Schmitz through Matthew J Justin and his son Matthias Justin, the presence of significant shared DNA between GJ and other known descendants of Johann Baptist Fessler/Elisabetha Maria Schmitz validates the generational links along this paternal line.
This supports the conclusion that DNA was passed from MRCA couple Johann Baptist Fessler/Elisabetha Maria Schmitz through Matthew J Justin to Matthias Justin, and ultimately to GJ, confirming this direct ancestral connection through multiple generations.