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