The proposed relationship of James Savage Robinson as the father of
Mary Ibia Robinson and
Sarah Jane Robinson is supported by DNA evidence indicating shared ancestry within the family lines.
Specifically, DNA evidence confirms a 1st cousin, once removed relationship between AT (a descendant of the Mary Ibia Robinson ancestral line) and MW (a descendant of the Sarah Jane Robinson ancestral line) with 339.00 cM of shared DNA across 14 HIR segments.
This match is consistent with their placement within these shared ancestral branches.