Tabitha Henderson
The proposed relationship of Tabitha Henderson as the mother of
Sarah Hartman and
Margaret Hartman is supported by DNA evidence indicating shared ancestry within the family lines.
Specifically, DNA evidence confirms a 3rd cousin, twice removed relationship between LHD (a descendant of the Margaret Hartman ancestral line) and JLT (a descendant of the Sarah Hartman ancestral line) with a shared segment of 72.76 cM across 4 HIR segments.
This match is consistent with their placement within these shared ancestral branches.