You need to narrow the parameters of the search, Nation > Province / County > community and at the same time which century and which particular decade.
It would be helpful to know if the marriage is binary or not. If binary, you need to know which one is the xx and which one is the xy.
It would be helpful to decide whether you are looking for the license for the ceremony or the ceremony itself
It would be helpful to know if banns were published or if there was an announcement in a local contemporary paper
It would be most helpful to know in the nearest census whether there were any Smith AND Jones in the community
It would be MOST helpful to know when either one or both of the people were born or when they died and whether there were children and if so when was the first child born