????
                               Callahan, John Fielding (b:1889)(d:1959)
                              |          ????
                     Callahan, John Albert (Jack) (b:1921)(d:1996)
                    |         |                    Dorau, Christian (b:1802-1836)(d:)
                    |         |          Dorau, Albert Frederick (b:1861)(d:1951)
                    |         |         |          (unknown), (unknown) (b:)(d:)
                    |          Dorau, Emma Bertha (b:1894)(d:1988)
                    |                   |          Heyer, August (b:1820-1821)(d:)
                    |                    Heuer, Paulina (b:1864)(d:1907)
                    |                              Tesker, Henryeta (b:1818-1819)(d:)
           Callahan, John Albert Jr (b:1946)(d:)
          |         |          ????
          |          Barre, Maralyn Germaine (b:1926)(d:2011)
          |                    ????
 Callahan, Kelly Patricia (b:1971)(d:)
          |          ????
           Riley, Rita (b:1947)(d:)
                     ????