Mo. Rev. Stat. § 451.180

In all counties in this state where records of marriages have been destroyed by fire or otherwise, any person whose record of marriage has been destroyed, or the heirs or descendants of such person, may obtain from the officer or minister who solemnized such marriage a certificate, showing dates, names of parties married, and witnesses present at said solemnization of marriage, so far as said officer or minister may be able to certify the same; and the record of said certificate shall be prima facie evidence of said marriage in all the courts of this state.