I suggest you contact the county court house in Warm Springs and ask if they have copies of any of the marriage certificates. I for one hae never seen any. I know when I transcribed the marriage records from 1853-1900 I did not see any certificates only hand written entries in the marriage books.
in the "Bath County Marriage Bonds and Minster's Returns 1791-1853" published by "The Bath County Historial Society, Inc." pg. 8 Feb 6, 1794 Marriage Bond: Philip Yeager and Barbery Nicholas, Surety, Peter Arbogost. George Nicklos gives consent for dau. Barbara. Witnesses, Peter Arbogost and John McMahan.
Feb. 6, 1794 Minister"s Return: Philip Yeagar and Barbery Nichlos, By George Guthrie