The proposed relationship of Eva Rosina Giese as the mother of
Christoph Bartig and
August Bartig is supported by DNA evidence indicating shared ancestry within the family lines.
Specifically, DNA evidence confirms a 3rd cousin, twice removed relationship between AF (a descendant of the Christoph Bartig ancestral line) and J (a descendant of the August Bartig ancestral line) with 87.80 cM of shared DNA across 3 HIR segments.
This match is consistent with their placement within these shared ancestral branches.