+———Henri DABROWSKI
  |    
  Pierre DABROWSKI 
  |                
  |           +———Wilhem LENGER
  |           |
  |       +———Robert LENGER (19 Aug 1868 Lodz, Poland – Feb 1911)
  |       |   |    
  |       |   +———Susanny SCHMIDT
  |       |
  |   +———Richard LAENGER ( – bet 1960 and 1965 France)
  |   |   |        
  |   |   |   +———Karl SCHIEDEK
  |   |   |   |
  |   |   +———Marianna or Maria “Marie” SZYDEK (1872/3 – 15 May 1916 Chojiny, Germany)
  |   |       |    
  |   |       +———Anastasia REJTICH
  |   |
  +———Monica LAENGER