^^ 
         Hendricus Maria Johannes Schipper & Clazina Johanna Verhage          
                                      |                                       
               ----------------------------------------                       
               |                                      |                       
  Cornelis Johannes Schipper &      Hendrikus Johannes Schipper & Apolonia    
         M.J. Lutterman                   Joanna Maria van der Lubbe          
               |                                      |                       
        Tonnie Schipper                   Petrus Theodorus Schipper
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