Justina Isaak (15 Jun 1774 - 1831)

The maternal relationship between Justina Isaak and her son Franz Gerhard Kroeker is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant DSMW.

The segmental (via DNA segment triangulation) and total DNA shared between DSMW and other confirmed descendants of MR is consistent with the expected ranges for their respective relationships. Since DSMW descends from MR through Justina Isaak and her son Franz Gerhard Kroeker, the presence of significant shared DNA between DSMW and other known descendants of MR validates the generational links along this maternal line.

This supports the conclusion that DNA was passed from MRCA MR through Justina Isaak to Franz Gerhard Kroeker, and ultimately to DSMW, confirming this direct ancestral connection through multiple generations.