Mary Cross , Caherconlish, 5310, Ireland ; Death Dec 18 1847.......married to .......Richard Keays who died 1862 Abington, Limerick, Ireland . They are my 4th great grandparents and their son, William Keays is my 3rd gr-grandfather who emigrated to Canada and died Dec 5 1862 Bathhurst, LaNARK, ONTARIO, Canada
Given your timeline for Mary Cross, it will be difficult to gather any info on her as church records for baptisms and marriages for Caherconlish start in 1841. You may have a little more luck with the records in Murroe/Abington as they start in 1814. Did the family live in Abington?
Best of luck with your search for relations.