????
                     Oncken, John Folkert (b:1837)(d:1925)
                    |          ????
           Oncken, George E (b:1872)(d:1955)
          |         |                    ????
          |         |          Ricklefs, Ricklef Mathies (b:1814)(d:1882)
          |         |         |          ????
          |          Ricklefs, Hilda Johanna (b:1849)(d:1921)
          |                   |          ????
          |                    Johnson, Elizabeth (Lizzie) (b:1812)(d:)
          |                              ????
 Oncken, Evelyn Kathryn (b:1907)(d:2005)
          |          ????
           Harmes, Catherine Mary (b:1877)(d:)
                     ????