????
           Kowalski, Frank (b:1863-1864)(d:)
          |          ????
 Kowalska, Laura (b:1891)(d:)
          |                    ????
          |          Dropiewski, (male_ancestor) (b:)(d:)
          |         |          ????
           Dropiewska, Josephine (b:1854-1855)(d:)
                    |          ????
                     Dropiewska, (female_ancestor) (b:)(d:)
                               ????