Mark E Kost and Yvonne L Coffman were married on May 18, 1985 in Grayson County, Texas.
At the time of their marriage, Mark was 23 and Yvonne was 22. This marriage was recorded with State File Number 059441.
If still married, Mark and Yvonne would be celebrating 41 years of marriage in 2026.
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To obtain a certified copy of the marriage certificate, contact the Grayson County Clerk's Office or the Texas DSHS Vital Statistics office.