????
                                         Janssen, Johann Seims (b:1846)(d:1931)
                                        |          ????
                               Janssen, John Gerhard (b:1885)(d:1971)
                              |         |          Ricklefs, Ricklef Mathies (b:1814)(d:1882)
                              |          Ricklefs, Elise Friederike (b:1851)(d:1923)
                              |                    Johnson, Elizabeth (Lizzie) (b:1812)(d:)
                     Janssen, Robert F (b:1927)(d:2007)
                    |         |          ????
                    |          Janssen, Elizabeth W (b:1893)(d:1962)
                    |                    ????
           Janssen, Gary Lee (b:1952)(d:)
          |         |          ????
          |          Wagner, Kathryn (b:1927)(d:)
          |                    ????
 Janssen, Rachel (b:1978)(d:)
          |          ????
           Pyle, Rosemary Lee (b:1954)(d:)
                     ????