Brilliant Andrew - thank you. I managed Longford but it would have taken a while before "thirty years" dawned on me. I've not come across such a certificate. Doesn't surprise me though - Bridget's death cert gives her age as "about 63" and her name has ranged from Donaghue through to Monaghan.
Interestingly, their son-in-law seems to have known more about the family than the sons and daughters, and thankfully he was the informant on a couple of deaths. Sadly no-one knew Cornelius' parents names.
The date of marriage is intruiging though - Bridget died in 1891 making her born 1828. The 1891 census has her age 60, in 1881 she was 48 and in 1871 she was 41. None of that would worry me, but it consistently puts her in the "jist a wean" category when it comes to weddings. Cornelius' age varies as well, but always has him just a few years older than her. According to his death cert he was born in 1827 making him about 14 when they married.
I think there's a distinct possibility they had no idea when they actually got married - first birth I've found is about 1854 - long time to be childless given the regularity with which they subsequently appeared!
Thanks for your help (again) Andrew. I'll just pop across the water and check out County Longford.
Best wishes
Pinkshoes
PS - "Columbkille" - parish in Longford, looks like a reasonable bet for Colmkill - Araphady strikes again
PPS - Andrew I didn't notice your bit about the place name - went diving across the water too fast! Thanks for all your efforts. Looks like Colmkill has it!