The maternal relationship between Christianna Carner and her son John Carner Critchlow 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 Christianna Carner and her son John Carner Critchlow, 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 Christianna Carner to John Carner Critchlow, and ultimately to DB, confirming this direct ancestral connection through multiple generations.