^^ 
               Hendricus Maria Johannes Schipper & Clazina Johanna Verhage   
                                            |                                
                      ---------------------------------                      
                      |                               |                      
  Arnold W.   Clazina Elizabeth     Hendrikus Johannes Schipper & Apolonia   
   Sewalt          Schipper               Joanna Maria van der Lubbe         
      |               |                               |                      
      -----------------                               |                      
                                                      |                      
                                    Petrus Theodorus Schipper & Jacqueline   
                                               Françoise Kleiss              
                                                      |                      
                                     Ian Melvin Schipper & Maaike Kleijn     
                                                      |                      
                                              Bo Lieke Schipper
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