The proposed relationship of John Watson as the father of
Julia Ann Watson and
Elizabeth Ann Watson is supported by DNA evidence indicating shared ancestry within the family lines.
Specifically, DNA evidence confirms a distant cousin relationship between MC (a descendant of the Julia Ann Watson ancestral line) and AH (a descendant of the Elizabeth Ann Watson ancestral line) with 23.90 cM of shared DNA across 1 HIR segments.
This match is consistent with their placement within these shared ancestral branches.