Isaak Defehr (27 Apr 1763 - Sep 1857)

The proposed relationship of Isaak Defehr as the father of David Defehr and Christina Defehr is supported by DNA evidence indicating shared ancestry within the family lines.

Specifically, DNA evidence confirms a distant cousin relationship between TCF (a descendant of the David Defehr ancestral line) and APF (a descendant of the Christina Defehr ancestral line) with 94.93 cM of shared DNA across 7 HIR segments.

This match is consistent with their placement within these shared ancestral branches.