The maternal relationship between Matilda BIRD and her daughter Kathleen MUSSON is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant SW.

The segmental (via DNA segment triangulation) and total DNA shared between SW and other confirmed descendants of John Thomazin BIRD/Catherine BARKER is consistent with the expected ranges for their respective relationships. Since SW descends from John Thomazin BIRD/Catherine BARKER through Matilda BIRD and her daughter Kathleen MUSSON, the presence of significant shared DNA between SW and other known descendants of John Thomazin BIRD/Catherine BARKER validates the generational links along this maternal line.

This supports the conclusion that DNA was passed from MRCA couple John Thomazin BIRD/Catherine BARKER through Matilda BIRD to Kathleen MUSSON, and ultimately to SW, confirming this direct ancestral connection through multiple generations.