The paternal relationship between James Joseph Tierney Curran and his daughter Jean Chambers Curran Donley is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant PCD.

The segmental (via DNA segment triangulation) and total DNA shared between PCD and other confirmed descendants of John Edwin Curran/Margaret Elizabeth Tierney is consistent with the expected ranges for their respective relationships. Since PCD descends from John Edwin Curran/Margaret Elizabeth Tierney through James Joseph Tierney Curran and his daughter Jean Chambers Curran Donley, the presence of significant shared DNA between PCD and other known descendants of John Edwin Curran/Margaret Elizabeth Tierney validates the generational links along this paternal line.

This supports the conclusion that DNA was passed from MRCA couple John Edwin Curran/Margaret Elizabeth Tierney through James Joseph Tierney Curran to Jean Chambers Curran Donley, and ultimately to PCD, confirming this direct ancestral connection through multiple generations.