The maternal relationship between Ida Mae Barlow and her son David Rappley Bateman is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant DB.

The segmental (via DNA segment triangulation) and total DNA shared between DB and other confirmed descendants of Johannes Kürner/Christiana Heffilfinger is consistent with the expected ranges for their respective relationships. Since DB descends from Johannes Kürner/Christiana Heffilfinger through Ida Mae Barlow and her son David Rappley Bateman, the presence of significant shared DNA between DB and other known descendants of Johannes Kürner/Christiana Heffilfinger validates the generational links along this maternal line.

This supports the conclusion that DNA was passed from MRCA couple Johannes Kürner/Christiana Heffilfinger through Ida Mae Barlow to David Rappley Bateman, and ultimately to DB, confirming this direct ancestral connection through multiple generations.