John S Sperlich and Katherine A Johnson were married on December 30, 1989 in Gregg County, Texas.
At the time of their marriage, John was 36 and Katherine was 37. This marriage was recorded with State File Number 168372.
If still married, John and Katherine would be celebrating 37 years of marriage in 2026.
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To obtain a certified copy of the marriage certificate, contact the Gregg County Clerk's Office or the Texas DSHS Vital Statistics office.