The proposed relationship of Carl Albert Tesch as the father of
Emil Otto Tesch and
August Tesch is supported by DNA evidence indicating shared ancestry within the family lines.
Specifically, DNA evidence confirms a 2nd cousin, twice removed relationship between RD (a descendant of the August Tesch ancestral line) and CT (a descendant of the Emil Otto Tesch ancestral line) with 53.10 cM of shared DNA across 2 HIR segments.
This match is consistent with their placement within these shared ancestral branches.