Ralph,Just today a friend sent this www page to me:
"IL Statewide Marriage Index 1763 - 1900" !!! It is a searchable index on the internet.You just type in the name of GROOM and/or BRIDE --- first names or no first names --- only groom's last name or --- only bride's last name
It will give you both names, county in which the marriage took place, date, volumn/page number, and license number (some or all of the above).This information makes it almost foolproof to get a copy of the marriage certificate.
Through this site you can also get the addresses of the County court houses and it costs you $7.00 to get a photocopy of their marriage cert.
Today I found the marriage records of two different sets of gggparents, both of whom were 'dead ends' before today!!!!!!Good luck, Donna P.