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