The maternal relationship between Mary Isabell Mcmullin and her son
James Heber Moulton is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant MM.
The segmental (via DNA segment triangulation) and total DNA shared between MM and other confirmed descendants of
John Murray Murdoch/
Ann Steele is consistent with the expected ranges for their respective relationships. Since MM descends from John Murray Murdoch/Ann Steele through Mary Isabell Mcmullin and her son James Heber Moulton, the presence of significant shared DNA between MM and other known descendants of John Murray Murdoch/Ann Steele validates the generational links along this maternal line.
This supports the conclusion that DNA was passed from MRCA couple John Murray Murdoch/Ann Steele through Mary Isabell Mcmullin to James Heber Moulton, and ultimately to MM, confirming this direct ancestral connection through multiple generations.