You might want to try the Irish Roots online site (it's a fee site). I found one set of gr-gr grandparents marriage and their two oldest children in the records. You can search records for all of Ireland. The site will sometimes grant a number of credits that you can use to preview possible matches -- although they don't always give enough information.

They didn't used to charge for viewing search results but do now ...so make sure if you use them it's when they're having a promotion and giving free credits. If you find a record for which you want to see details, there is a fee.

http://ifhf.brsgenealogy.com/