The maternal relationship between Ethel Olive Humphrey and her daughter Dorothy Murphy is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant TK.

The segmental (via DNA segment triangulation) and total DNA shared between TK and other confirmed descendants of GH/Mary Luna Bowles is consistent with the expected ranges for their respective relationships. Since TK descends from GH/Mary Luna Bowles through Ethel Olive Humphrey and her daughter Dorothy Murphy, the presence of significant shared DNA between TK and other known descendants of GH/Mary Luna Bowles validates the generational links along this maternal line.

This supports the conclusion that DNA was passed from MRCA couple GH/Mary Luna Bowles through Ethel Olive Humphrey to Dorothy Murphy, and ultimately to TK, confirming this direct ancestral connection through multiple generations.