The proposed relationship of Mary Wilson as the mother of Mary Doak and Martha Doak is supported by DNA evidence indicating shared ancestry within the family lines.

Specifically, DNA evidence confirms a distant cousin relationship between RH (a descendant of the Mary Doak ancestral line) and DL (a descendant of the Martha Doak ancestral line) with a shared segment of 19.74 cM across 1 HIR segments.

This match is consistent with their placement within these shared ancestral branches.