My great-grandparents Percival Davis and Viola Bausman married on July 17, 1913, in Freeport, Stephenson County, Illinois.  The certified record of marriage is from 1959.

Transcription of marriage certificate:
State of Illinois, Stephenson County
Certificate of Marriage

I, Kenneth G. Schultz, Clerk of the County Court of said County, hereby certify that Mr. Percival L. Davis was married to Miss Viola E. Bausman in said County on the 17th day of July A.D. 1913 by Wm. M. McGuire. Ages given next birthday Groom: 26 Bride: 22