A lot depends on years you need... as you see Civil Reg dates posted.
If you have names of a couple that married approx mid 1870's for example and Groom was John Smith you could try a search like this (as attached)
So, if you have similar you can amend Search... just use Name and Year Range. No need to complete District if you don't know!!
If you find Marriage.... then it will tell you District so you can amend Search to Surname, District and Year Range, tick Births to look for children (mother's maiden name are included on Certs)
https://civilrecords.irishgenealogy.ie/churchrecords/civil-search.jsp is Irish Govt Website
Some earlier ones do not have Images of Certs at moment but one can check again maybe after 6 months.
Handy for those who want to find people without having to post Names Dates etc etc on internet if that is what they want.
...or those that want to have a go at it first and can post here if/when stuck etc.
It is the
Irish Govt BDM WebiteOne needs to solve Captcha, and can use initials to sign in to view Certs.
No subscription or anything else needed.