Unfortunately our church records were destroyed during the early days of the Civil War as were many tens of thousands of other records. I am trying to piece together data from such sources as the Mercers Company and Griffiths Valuations.
It was mainly Church of Ireland records that had been sent to Dublin for safekeeping that were destroyed. I'm not aware of same happening to the Kilrea R.C. ones. Unfortunately many church records (of all denominations) have gotten misplaced and lost over time.
https://www.johngrenham.com/records/rc_church.php?churchid=0360&parish=Kilrea