Lyn and Alma. Thank you for your very helpful advice. I was able to use the NSW data base to confirm information I had previously been given. I think there is a "back door' into the data bases if one knows of specific families who left Ireland for Australia, or if one can coordinate emmigrant lists to the BMD files. I realize that it is a bit "hit and miss" since not all migrants went to the same State but, guessing that many/most?in the early years of migration went to NSW, it at least offers one a shot a figuring it out. I did find the family of James Carolan in the NSW data base from 1858 on and indeed, the profile shows his wife's parents as Patrick and Mary D. They would be Patrick Davey and Mary Denvir. I'll use this approach on some other individuals from County Down who went to Australia. Thanks again. Owen Davey