In many instances of Marriage records pre-1900 you might find your ancestor listed under a nickname. For instance my ggrandfather Woods and ggrandmother Elizabeth are listed as Woodsie and Lizzie. So don't give up if you can't find them listed it
might be under a nickname. Example:(William as Bill, Emma as Em or Emmie, Etc.)
Most marriage records are kept with the County/City in which the marriage took place. Call the local County/City Clerk to find out what years they carry on file. If the Marriage took place before the dates they carry you will have to request a search from the State Archives.