Herbert Drefs (1899 - 1961)

The paternal relationship between Herbert Drefs and his son FD is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant FD.

The segmental (via DNA segment triangulation) and total DNA shared between FD and other confirmed descendants of Wilhelmine Ernestine Grade is consistent with the expected ranges for their respective relationships. Since FD descends from Wilhelmine Ernestine Grade through Herbert Drefs and his son FD, the presence of significant shared DNA between FD and other known descendants of Wilhelmine Ernestine Grade validates the generational links along this paternal line.

This supports the conclusion that DNA was passed from MRCA Wilhelmine Ernestine Grade through Herbert Drefs to FD, and ultimately to FD, confirming this direct ancestral connection through multiple generations.