????
           Foerster, Julius (b:1853-1854)(d:)
          |          ????
 Foerster, Arthur (b:1893)(d:)
          |                    ????
          |          Sidow, Fred (b:)(d:)
          |         |          ????
           Sidow, Augusta (b:1862-1863)(d:)
                    |          ????
                     (unknown), Caroline (b:)(d:)
                               ????