The proposed relationship of Antonia Lewandowski as the mother of
Stanislaw Peter Bieniewicz and
Rumalda Martha Bieniewicz is supported by DNA evidence indicating shared ancestry within the family lines.
Specifically, DNA evidence confirms a distant cousin relationship between RLB (a descendant of the Rumalda Martha Bieniewicz ancestral line) and NB (a descendant of the Stanislaw Peter Bieniewicz ancestral line) with 63.55 cM of shared DNA across 4 HIR segments.
This match is consistent with their placement within these shared ancestral branches.