John J Koons and Marianne B Gilbert were married on May 20, 1979 in Harris County, Texas.
At the time of their marriage, John was 32 and Marianne was 25. This marriage was recorded with State File Number 080941.
If still married, John and Marianne would be celebrating 47 years of marriage in 2026.
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To obtain a certified copy of the marriage certificate, contact the Harris County Clerk's Office or the Texas DSHS Vital Statistics office.