The proposed relationship of Mary Hempschmeyer as the mother of Margaret Catherine Lemke and CAL is supported by DNA evidence indicating shared ancestry within the family lines.

Specifically, DNA evidence confirms a 1st cousin, twice removed relationship between KMC (a descendant of the Margaret Catherine Lemke ancestral line) and MS (a descendant of the CAL ancestral line) with a shared segment of 255.72 cM across 9 HIR segments.

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