Do you know if Patrick and Mary's marriage had been found before your records had been destroyed by the storm?
I had a look at the online parish records and didn't see the marriage, I looked from 1850 to 1870.
I wondered what lead you to Bonniconlon.
Is it possible Mary was from a different parish, marriages usually take place in the bride's parish, or could they have met in America?
Lots of questions and no answers for you but I'm just trying to figure out where else we can search.