The proposed relationship of Atha Leile Murdock as the mother of
George Keith Stewart and
David Murdock Stewart is supported by DNA evidence indicating shared ancestry within the family lines.
Specifically, DNA evidence confirms a distant cousin relationship between CS (a descendant of the George Keith Stewart ancestral line) and BLS (a descendant of the David Murdock Stewart ancestral line) with 258.95 cM of shared DNA across 13 HIR segments.
This match is consistent with their placement within these shared ancestral branches.