Some questions for OP:
- You state that the Rattigan's provided the burial plot where all the O'Connells are buried. But John Rattigan didn't marry Mary O'Connell until 1945. How could the Rattigans possibly provide a burial plot for people who were already long dead and buried for many years before 1945?
- Already mentioned, but Judith is actually more likely to appear as Julia and Joanna. Have you searched using all name variations? [I have many Julias in my family, and I can attest that the name varies in this way for the same persons in many records].
- As for different locations being mentioned, you need to become familiar with the physical geography. Some places mentioned are townlands, others parishes, others again probably registration districts.