The maternal relationship between Mary Radke and her daughter SH is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant SH2.
The segmental (via DNA segment triangulation) and total DNA shared between SH2 and other confirmed descendants of JR/
Wilhelmine Ernestine Grade is consistent with the expected ranges for their respective relationships. Since SH2 descends from JR/Wilhelmine Ernestine Grade through Mary Radke and her daughter SH, the presence of significant shared DNA between SH2 and other known descendants of JR/Wilhelmine Ernestine Grade validates the generational links along this maternal line.
This supports the conclusion that DNA was passed from MRCA couple JR/Wilhelmine Ernestine Grade through Mary Radke to SH, and ultimately to SH2, confirming this direct ancestral connection through multiple generations.