The paternal relationship between John Franklin Pennington and his son Ennis Russell Pennington is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant PDP.

The segmental (via DNA segment triangulation) and total DNA shared between PDP and other confirmed descendants of Whitson Pennington/Mary Chapman is consistent with the expected ranges for their respective relationships. Since PDP descends from Whitson Pennington/Mary Chapman through John Franklin Pennington and his son Ennis Russell Pennington, the presence of significant shared DNA between PDP and other known descendants of Whitson Pennington/Mary Chapman validates the generational links along this paternal line.

This supports the conclusion that DNA was passed from MRCA couple Whitson Pennington/Mary Chapman through John Franklin Pennington to Ennis Russell Pennington, and ultimately to PDP, confirming this direct ancestral connection through multiple generations.