http://newsplan.liem.org.uk/Either select 'Lincolnshire Gainsborough Lib' from the drop-down list of library names or else type Gainsborough into the 'Town/county' box.
Follow the instructions at the top of the page on how to find out more details about the papers and where to access copies.
From what I can see none of the local Gainsborough papers are currently available via the British Newspapers 1710-1953 site.
I think most local papers carried wedding reports in those days. And in much greater detail than nowadays. Though it was dependent on the bride and groom sending in the report to the paper in the first place - reporters didn't attend every single wedding and take details.
