My own family is from Lehigh County, but arrived much more recently from Austria (my mother's ancestors are Colonial). Have any of the men in your family conducted DNA testing? If they match with me it would show that we are related more distantly in time. There's circumstantial evidence that suggests my Schatz may have originated in the Rhine valley in Eastern Switzerland in the 14th/15th centuries. It is certainly conceivable that a Schatz family in southwest Germany could have the same roots.