The Groton Town Clerk also provides transcripts of marriage licenses for genealogical purposes. The difference is that a transcript of the license shows all the information, such as mother and father, place of birth, etc. In order to get a copy of a marriage certificate or a transcript you must either be one of the parties to the marriage; or the license must be over 50 years old; or both parties to the license must be deceased; or you must be a direct-line descent (i.e. child, grandchild, great grandchild, etc.). The Town of Groton Marriage records begin with 1881.
You can also contact our Town Historian for help with local genealogical information:
Rosemarie Tucker, Town Historian
Another place to start your search is the Tompkins County NYS GenWeb Site