My greatgrandfather Jack (Johann?) C. Kohlsaat emmigrated to the U.S. around the 1880's. He supposedly had a degree in mining engineering. He for a period of time he operated/managed coal mines in eastern Kentucky. I have no clue as to what part of Germany he came from. The only connection/lead that I have is that the lady holding the title of Countess or Baroness Schleswig-Holstein right after World War II (circa 1946) was my grandmother's cousin and chilhood friend. Unfortunately their letters of correspondence were destroyed some years ago. I would be most grateful to anyone who could furnish me with the name and address of the current holder of the aforementioned title or who could suggest way to find out that information.