Excellent replies, thank you all.
Fascinating links too - it never ceases to amaze me how much information is available through this forum.
It took me a while to find this actual marriage record (it's actually one further up the page - I posted the bottom bit because it had most information). I tried Ancestry, then FamilySearch, then tried irishgenealogy.ie and bingo there it was. I suppose if it was easy it would be boring.
Thanks again.