The proposed relationship of David Giesbrecht as the father of
Abraham Giesbrecht and
Cornelius Giesbrecht is supported by DNA evidence indicating shared ancestry within the family lines.
Specifically, DNA evidence confirms a distant cousin relationship between EEN (a descendant of the Abraham Giesbrecht ancestral line) and JP (a descendant of the Cornelius Giesbrecht ancestral line) with 97.11 cM of shared DNA across 8 HIR segments.
This match is consistent with their placement within these shared ancestral branches.