There are a few websites that hold records.
www.rootsireland.ie has a searchable database of Catholic Church records. There is a fee for using the site but it can be purchased on a daily, monthly or yearly basis.
Civil records are available on the link below
The census 1901/1911 census are available to search on http://www.census.nationalarchives.ie/
Records of a place can provide useful information about where your ancestors lived. The main sources for records of place are Griffith's Valuation, the Tithe Applotment Books, estate papers and maps.They are available at https://www.nli.ie/en/griffiths-valuation.aspx
I hope you will be able to find some information to help through these sites.