????
           Janssen, Johann Seims (b:1846)(d:1931)
          |          ????
 Janssen, Friedrich Richard (b:1877)(d:1894)
          |                    ????
          |          Ricklefs, Ricklef Mathies (b:1814)(d:1882)
          |         |          ????
           Ricklefs, Elise Friederike (b:1851)(d:1923)
                    |          ????
                     Johnson, Elizabeth (Lizzie) (b:1812)(d:)
                               ????