????
                     Janssen, John Seims (b:1846)(d:1931-1960)
                    |          ????
           Janssen, Carl John (b:1882)(d:1968)
          |         |                    ????
          |         |          Ricklefs, Ricklef Mathies (b:1814)(d:1882)
          |         |         |          ????
          |          Ricklefs, Elise Friederike (b:1851)(d:1923)
          |                   |          ????
          |                    Johnson, Elizabeth (Lizzie) (b:1812)(d:)
          |                              ????
 Janssen, Carl Ferdinand (b:1916)(d:1965)
          |                              ????
          |                    Heldt, Ferdinand (b:)(d:1867-1868)
          |                   |          ????
          |          Heldt, August Ferdinand (b:1866)(d:1915)
          |         |         |          ????
          |         |          Grabow, Rosina (b:1846)(d:)
          |         |                    ????
           Heldt, Louise W (Lucy) (b:1892)(d:1951)
                    |                              ????
                    |                    Monk, Folkert (b:1810-1811)(d:)
                    |                   |          ????
                    |          Monk, Eyler Eielt (b:1842)(d:1898)
                    |         |         |          ????
                    |         |          (unknown), Nellie (b:1805-1806)(d:)
                    |         |                    ????
                     Monk, Nellie J (b:1871)(d:1964)
                              |                    ????
                              |          van Westen, Albrecht M (b:1809)(d:1882)
                              |         |          ????
                               van Westen, Anna Christina (b:1847)(d:1919)
                                        |          ????
                                         Baumann, Trientje (b:1823)(d:1905)
                                                   ????