Just did a quick search and found the family in the 1900 1910 and 1920 Census
Massac County Benton Pct. In the 1920 Census it lists
Levi age 22 and Grace age 17 as single,
Indiana (sp Indean) widowed. The
Illinois Statewide Marraige Index only goes to 1900. For marraiges after this you will probably have to contact the
Massac County Clerks office. You may try visiting the
Massac County Genealogy Society Web site. It's been a while since I visited the site but there may be someone there to help you. The address is:
http://www.rootsweb.ancestry.com/~ilmcgs/Don