The paternal relationship between Thomas Geary and his daughter Bridget Geary is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant JO.

The segmental (via DNA segment triangulation) and total DNA shared between JO and other confirmed descendants of BG/S is consistent with the expected ranges for their respective relationships. Since JO descends from BG/S through Thomas Geary and his daughter Bridget Geary, the presence of significant shared DNA between JO and other known descendants of BG/S validates the generational links along this paternal line.

This supports the conclusion that DNA was passed from MRCA couple BG/S through Thomas Geary to Bridget Geary, and ultimately to JO, confirming this direct ancestral connection through multiple generations.