The proposed relationship of Mary Elizabeth Wellborn as the mother of
Maude Gertrude Griggs and
Mark Joseph Griggs is supported by DNA evidence indicating shared ancestry within the family lines.
Specifically, DNA evidence confirms a distant cousin relationship between KGS (a descendant of the Mark Joseph Griggs ancestral line) and CG (a descendant of the Maude Gertrude Griggs ancestral line) with 313.80 cM of shared DNA across 13 HIR segments.
This match is consistent with their placement within these shared ancestral branches.