General Register Office holds the civil registration records for the Republic of Ireland. Certificates can be purchased online. Photocopies of certificates that can only be used for research purposes are available at the reduced rate of €4.00. You must apply by post and application forms can be downloaded at tinyurl.com/oywjnbo
TIP: The site IrishGenealogy.ie. now holds index records linked to original images from the historic registers of births, marriages and deaths. The free images are available for births 1864 to 1916, marriages 1870 to 1941 and deaths 1878 to 1966. Marriages back to 1845 and deaths to 1864 to be added when available.