Possibly the swiftest route to your roots.
Irish genealogy website directory.
search.ancestry.com/search/db.aspx?dbid=49209&cj=1&o_xid=0000584978&o_lid=0000584978
Description:
Scanned searchable book with 8500 names (requires payment - part of an Ancestry subscription). This book includes transcriptions of "Information Wanted" advertisements placed in the Irish immigrant newspaper, the Irish-American, from 1849-1871 in New York City. These ads were basically requests for information on family and friends who had become separated. Often the parish, town or county in Ireland is given for the immigrants listed in the ads.