Hi Gai, The BIVRI are the British Isles Index and cover England, Ireland, Scotland and Wales . THe CD's that I have cover 1530 to 1906 and is only a partial listing of what the Family History Center (LDS) has .. What I have found so far is that the older dates are maily in England and most of the Ireland records start in 1860's .. There are some older in Ireland but not that many .. I have only been able to find my paternal grandmother and her brothers births in Mayo and I know many others had been registered .. Checked for John Lindsay born in Co Down in 1829 with no luck .. One in 1813 and then they start in 1864 ..Going to the Family Search site may give you more information. MaryPat