You have a great picture of James Henry Warner. If you get an opportunity, could you add his story to our Chronicles site? https://irelandxo.com/ireland-xo/history-and-genealogy
You don't mention whether James was Church of Ireland or Roman Catholic. The subscription site Roots Ireland has records for both churches going back before 1826 yet when I searched, I did not find any children of John Warner and his wife Catherine. Possibly he was baptized in a church which no longer has records back to 1826 and then the family moved to Mitchelstown?
I did not find any info on the Rev. Bolster.