Hi Marion,
It's great to see that you're researching your great great grandfathers family and roots in County Limerick! I'd love to see if I can point you in the right direction. :)
Since you already know when and where Christopher and Frances were married, you can find out a lot of information.
Before 1864 records were kept in the form of church and parish records, and all the surviving records have been sorted into county based
genealogical centres. Everything from the marriage license and birth licenses for Christopher and Frances and their children can be found in the
centre in Limerick.
There is also a helpful free search option online of the Church records via the
Irish Genealogy page.
Anything from after 1864 in Limerick are kept at the
General Register Office of Ireland (GRO). In 1864 civil registration was introduced in Ireland, which is when we started seeing the formal registration of births, marriages, adoptions and deaths.
Have you reached out to any of these archives yet? They would gladly see what they can do to help.
I hope you'll receive more tips and suggestions from our other members, and please don't hesitate to give us a shout if you have any questions.
Wishing you the best of luck on your search,
Melin