The death records are reflected in the information I gave you previously. The database combines the tombstone inscriptions and the church's records.
The only clue would be the one from the tombstone of James O'CONNOR (i.e. born in Co. Wexford, Ire.). The cemetery records at the church (many of these records were destroyed by a fire at the sexton's house) list Katherine, Stella and James as occupants for one plot. I suspect that plot would have been purchased by Batholomew. Compare the death certificates of James and Bartholomew to see if they are brothers. Then you can look in Co. Wexford.
There are few if any references in the church records to a specific place in Ireland.