I searched for marriage and death records for Agnes and Norah on the free site www.irishgenealogy.ie but did not see any records. While looking for those records, I did locate the death records for Daniel and Mary Anne which are below. On Mary Anne's record, the informant was her daughter Eileen Nalty from Aldershot England. Is Eileen Norah? Likely Agnes and Norah went to England.
See fourth record 1921 death Daniel https://civilrecords.irishgenealogy.ie/churchrecords/images/deaths_retur...
See seventh record 1931 death Mary Anne