????
                     Martensson, Per (b:)(d:)
                    |          ????
           Petersen, Martin (b:1872)(d:1963)
          |         |          ????
          |          Larsdotter, Christine Marie (b:)(d:)
          |                    ????
 Petersen, Arnold Everett (b:1908)(d:1995)
          |                                        ????
          |                              Krofta, Matej (b:)(d:)
          |                             |          ????
          |                    Krofta, Matej (b:1810)(d:1893)
          |                   |         |          Ssysl, Jan (b:)(d:)
          |                   |          Schissel, Alzbeta (b:)(d:)
          |                   |                    Kovarojic, Barbora (b:)(d:)
          |          Krofta, John Nepomunky (b:1839)(d:1928)
          |         |         |                    ????
          |         |         |          Trejbal, Jan (b:)(d:)
          |         |         |         |          ????
          |         |          Trejbal, Theresa (b:1811)(d:1893)
          |         |                   |          ????
          |         |                    Riba, Antonie (b:)(d:)
          |         |                              ????
           Krofta, Emma Francis (b:1883)(d:1980)
                    |                    ????
                    |          Maertz, Charles (b:1821)(d:1914)
                    |         |          ????
                     Maertz, Anna (b:1849)(d:1929)
                              |          ????
                               Hajek, Josephina (b:1821)(d:1894)
                                         ????