+———Wilhem LENGER
      |
  +———Robert LENGER (19 Aug 1868 Lodz, Poland – Feb 1911)
  |   |    
  |   +———Susanny SCHMIDT
  |    
  Olga LAENGER ( – 6 May 1988)
  |        
  |   +———Karl SCHIEDEK
  |   |
  +———Marianna or Maria “Marie” SZYDEK (1872/3 – 15 May 1916 Chojiny, Germany)
      |    
      +———Anastasia REJTICH