The proposed relationship of Rachel Catherine Robinson as the mother of
Mary Elizabeth Johnson and ABJ is supported by DNA evidence indicating shared ancestry within the family lines.
Specifically, DNA evidence confirms a 3rd cousin, once removed relationship between BB (a descendant of the ABJ ancestral line) and SRB (a descendant of the Mary Elizabeth Johnson ancestral line) with 55.18 cM of shared DNA across 3 HIR segments.
This match is consistent with their placement within these shared ancestral branches.