????
                     Oncken, John Folkert (b:1837)(d:1925)
                    |          ????
           Oncken, William Gerhard (b:1880)(d:1955)
          |         |                    ????
          |         |          Ricklefs, Ricklef Mathies (b:1814)(d:1882)
          |         |         |          ????
          |          Ricklefs, Hilda Johanna (b:1849)(d:1921)
          |                   |          ????
          |                    Johnson, Elizabeth (Lizzie) (b:1812)(d:)
          |                              ????
 Oncken, Emma Louise (b:1915)(d:)
          |          ????
           Doden, Minnie (b:)(d:)
                     ????