I can't add anything to your information except that I have the same. The source of some information may of come from what I have seen referenced as the Gardner Family Bible that has Kitch family records written in German in it. It is still in the hands of some Gardner family descedents in the middle PA area. Since the marriage was probably after the American Revolution I'm not sure when some of the old German Church records cut off and you have to go to the local church records but might be a try. Jerry Garrison who posts here has researched many of them in past years. He has a web-site and you might try it. Another thought is sometime after the Revolution the fathers in power of Pennsylvania took it upon themselves to not allow people with German names to use them and many changed their name to sound more English or shortened. This may of happened with Frankenberger just going to Frank. In the 1830 - 1840 period the Pennsylvania Assembly resined this law but not all people took their original names back at that time.