Hi, If I were you I would contact the historical society in the USA county in which your own family lived. Offer them a donation to their society in return for documents, information on your particular family using the resources they are familiar with. I did this and it was the best investment I ever made! Often a circa 1900 USA county marriage application (not to be confused with a certificate) gives information on the parents of the bride & groom. They may be able to come up wills, land records (which give last place lived), B/M/D data, newspapers clippings, etc. First subscribe to the periodical they publish about their county. Not only will it be interesting, with an everyname index in the winter issue, but you may very well find something on your particular family and you can place a query that is seen by nonInternet researchers! Once you have demonstrated a definite interest in their society and USA county, they will likely go all out for you in obtaining documents on your family. These documents will help determine specifically where your family came from. You can also contact the LDS FHC and ask if they have any other information on IGI index entries such as the above - I believe they will do this on up to 8 entries for a total of two dollars, sometimes narrowing down to a townland as opposed to a registration district, etc. If you have a good address in Ireland for your family contact the Land Valuation Office, Dublin, they are on the Internet; for a charge, and using their cancelled land books, current land books, old maps, etc., they can trace all transactions on particular parcels of land.