What is the IGI?
The International Genealogical Index is maintained by the FHL and is available on microfiche or CD-ROM at your local LDS FHC, and online at http://www.familysearch.org/. It contains millions of birthdates, christening dates, marriages, etc., indexed by surname. It is by no means a complete index to all records, however. Furthermore, it should be considered to be just an index; you should always consult the source documents for IGI entries of interest, as they may contain more information and the IGI may have errors in transcription.