The paternal relationship between David Fehr and his son
Johann D. Fehr is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant TCF.
The segmental (via DNA segment triangulation) and total DNA shared between TCF and other confirmed descendants of
Benjamin Defehr/
Anna Bergen is consistent with the expected ranges for their respective relationships. Since TCF descends from Benjamin Defehr/Anna Bergen through David Fehr and his son Johann D. Fehr, the presence of significant shared DNA between TCF and other known descendants of Benjamin Defehr/Anna Bergen validates the generational links along this paternal line.
This supports the conclusion that DNA was passed from MRCA couple Benjamin Defehr/Anna Bergen through David Fehr to Johann D. Fehr, and ultimately to TCF, confirming this direct ancestral connection through multiple generations.