????
                     Dorau, Christian (b:1802-1836)(d:)
                    |          ????
           Dorau, Christlieb Erdman (b:1852)(d:1912)
          |         |          ????
          |          (unknown), (unknown) (b:)(d:)
          |                    ????
 Dorau, Conrad Otto (b:1893)(d:1963)
          |          ????
           Strassburg, Amelia Frederica (b:1853)(d:1932)
                     ????