The maternal relationship between Mabel Clare Swick and her son LeRoy McCauley Porter is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant DL.

The segmental (via DNA segment triangulation) and total DNA shared between DL and other confirmed descendants of William Scott/Rachel Mounts is consistent with the expected ranges for their respective relationships. Since DL descends from William Scott/Rachel Mounts through Mabel Clare Swick and her son LeRoy McCauley Porter, the presence of significant shared DNA between DL and other known descendants of William Scott/Rachel Mounts validates the generational links along this maternal line.

This supports the conclusion that DNA was passed from MRCA couple William Scott/Rachel Mounts through Mabel Clare Swick to LeRoy McCauley Porter, and ultimately to DL, confirming this direct ancestral connection through multiple generations.