????
                                         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, Dale E (b:1933)(d:2020)
                    |         |          ????
                    |          Janssen, Elizabeth W (b:1893)(d:1962)
                    |                    ????
           Janssen, Rodney (b:1958)(d:)
          |         |          ????
          |          Bruns, Mary Jane (b:1935)(d:)
          |                    ????
 Janssen, Cari Ann (b:)(d:)
          |          ????
           (unknown), (unknown) (b:)(d:)
                     ????