????
                     Christensen, Christen (b:)(d:1876)
                    |          ????
           Christensen, Martin (b:1870)(d:1957)
          |         |          ????
          |          (unknown), Anna (b:)(d:1874)
          |                    ????
 Christensen, Grace Margaret (b:1920)(d:2005)
          |                    ????
          |          Frederickson, James (b:1846)(d:)
          |         |          ????
           Frederickson, Sophia M (b:1881)(d:1974)
                    |          ????
                     Anderson, Margaret (b:1854)(d:)
                               ????