^^ 
 Hendricus Maria Johannes Schipper &  Agnes Maria Francisca Antonia Walters  
       Clazina Johanna Verhage          & Petrus Jacobus Adrianus van der    
                  |                                   Lubbe                  
                  |                                     |                    
         -------------------                            |                    
         |                 |                            |                    
   Petrus Ernest       Hendrikus                        |                    
 Cornelis Schipper      Johannes       Apolonia Joanna Maria van der Lubbe   
                        Schipper                        |                    
                           |                            |                    
                           ------------------------------
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