The paternal relationship between Edwin Russell Curran MD and his daughter Geraldine Ann Springsteel Heizler is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant GSGHH.

The segmental (via DNA segment triangulation) and total DNA shared between GSGHH and other confirmed descendants of John Edwin Curran/Margaret Elizabeth Tierney is consistent with the expected ranges for their respective relationships. Since GSGHH descends from John Edwin Curran/Margaret Elizabeth Tierney through Edwin Russell Curran MD and his daughter Geraldine Ann Springsteel Heizler, the presence of significant shared DNA between GSGHH 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 Edwin Russell Curran MD to Geraldine Ann Springsteel Heizler, and ultimately to GSGHH, confirming this direct ancestral connection through multiple generations.