Many couples married in locations other than Chicago for a whole range of reasons. If you don't find the marriages you're looking for in Cook County, you should try these popular spots: Lake County, IN Porter County, IN Berrien County, MI Van Buren County, MI Kenosha County, WI Milwaukee County, WI Racine County, WI I wrote an article about "Gretna Greens" for the Newberry Library Weblog some time ago. You might find it interesting. http://www.newberry.org/genealogy/news/default.asp?postid=490 Ginger