The maternal relationship between Maria Dumke and her daughter
Barbara Degener is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant JV.
The segmental (via DNA segment triangulation) and total DNA shared between JV and other confirmed descendants of JH/FM is consistent with the expected ranges for their respective relationships. Since JV descends from JH/FM through Maria Dumke and her daughter Barbara Degener, the presence of significant shared DNA between JV and other known descendants of JH/FM validates the generational links along this maternal line.
This supports the conclusion that DNA was passed from MRCA couple JH/FM through Maria Dumke to Barbara Degener, and ultimately to JV, confirming this direct ancestral connection through multiple generations.