One of the most informative records you can find, pertaining to your ancestors are their marriage records. Unfortunately for us researchers, the United States government didn't require marriages to be recorded in any official capacity until 1885. On the bright side, you may be able to find church records proving the marriage, but those often didn't provide much personal information.
Tip: Check out my Pennsylvania Resources page to find places where you can find marriage records and other Pennsylvania genealogical records, maps and more!
For marriage and divorce records reported after 1885, they must be obtained from the courthouse in the county in which the marriage license was issued or decree of divorce was granted. The Pennsylvania Division of Vital Records office does not hold copies of marriage and divorce records.
Tip: If you're not sure which county a town is located in, try my County Search Tool.