Most of the marriage licenses I've ordered from IRAD were issued prior to 1900 and whether or not state law changed after the turn of the century I don't know. I can tell you that the following is true for the licenses I've ordered. Illinois marriage license applications and certificates included the bride's and groom's names, the witnesses' names, the name of the person who performed the marriage and the name of the County Clerk. Most times at least one of these forms also bears the signatures of the above individuals. However, the Board of Health document which became an Illinois State requirement in 1877 and which accompanied the license and application, included the parents' names (the mothers' maiden names), as well as other helpful information such as the couple's places of birth, their ages as of their next birthdays, the groom's occupation, the location of their current residences and the number of the marriage (e.g., the groom's first marriage). I've been told that after this form became a requirement, it took a while before all the County Clerks began to religiously make sure it was prepared for each marrying couple. Marcia Farina