You must know the specific place of origin to search in foreign countries. Begin with what you know and add to those facts as much as you can from American records first. For example-- Church affiliation is a primary reason for emigration, for loyalties in military and political conflicts, for choice of neighborhoods to settle in, for cemeteries to be buried in, and to explain the wording of wills and other property documents. Church affiliation in the U.S. can also identify the right church, in Europe, to search–and by law, the right province or kingdom.