Well here's a start for you from the Illinois State Archives online marriage index. They have many indexes so you should start your search there. I did a global search last night for someone but today the site won't cooperate. Maybe late evening is the best time to try. GILLESPIE, CASSIUS W MARTIN, ELIZABETH 02/01/1876 00H/0019 MC LEAN This is who he married in 1876 in McLean County, IL. Familysearch.com also shows a Cashiues Gillespie as a 14 year old in the 1880 census in Illinois with his parents Henry and Marthy and 5 brothers and 3 sisters. I'd consider this too. It's just a matter of a little further digging now. Incidentally the marriage license number is 00H/0019 and there are directions on the site for ordering a copy. Joan in Illinois