Any info I have came from the 1911 census. It would make sense that they were married in Derriaghy church as that is where Robert & Sarah are buried, unfortunately their headstone was removed some years ago by one of their daughter's in law (who is now buried in the same grave) and I can't trace it.
Is there a place for old headstones?
I am planning to check the church records the next time I am home (live in England).
Thanks for your replys