????
           Jass, Wilbur Gordon (b:1921)(d:2008)
          |          ????
 Jass, Carolyn Ruth (b:1955)(alive: 2025)
          |                                        ????
          |                              Heitzman, Johann Georg (John) (b:1842)(d:1932)
          |                             |          ????
          |                    Heitzman, John George (b:1863)(d:1944)
          |                   |         |          Pfaff, Johann Michael (b:1820)(d:1899)
          |                   |          Pfaff, Margarethe (b:1852)(d:1910)
          |                   |                    Klein, Philipinna (b:1822)(d:1888)
          |          Heitzman, Johann J (John) (b:1889)(d:1985)
          |         |         |                    ????
          |         |         |          Schulz, August (b:1845)(d:1926)
          |         |         |         |          ????
          |         |          Schulz, Lydia (b:1868)(d:1951)
          |         |                   |          ????
          |         |                    Grotz, Louise (b:1849)(d:1928)
          |         |                              ????
           Heitzman, Ethel Cora (b:1924)(d:2021)
                    |          ????
                     Graf, Marie T (b:1887-1888)(d:1957)
                               ????