The maternal relationship between Sarah Flannery and her daughter NA is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant ST.

The segmental (via DNA segment triangulation) and total DNA shared between ST and other confirmed descendants of Patrick Flannery/Martha McGurk is consistent with the expected ranges for their respective relationships. Since ST descends from Patrick Flannery/Martha McGurk through Sarah Flannery and her daughter NA, the presence of significant shared DNA between ST and other known descendants of Patrick Flannery/Martha McGurk validates the generational links along this maternal line.

This supports the conclusion that DNA was passed from MRCA couple Patrick Flannery/Martha McGurk through Sarah Flannery to NA, and ultimately to ST, confirming this direct ancestral connection through multiple generations.