Willem I "the Silent"                                     
                         Prince of Orange, Count of Nassau                         
                         1533-1584                                                 
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                             |                                                     
                         Maurits                                                   
                         Prince of Orange, Count of Nassau                         
                         1567-1625                                                 
                             |                                                     
                             |                                                     
                         Lodewijk van Nassau                                       
                         Heer van Beverweerd                                       
                         1602-1665                                                 
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                             |                                                     
                         Elisabeth van Nassau                                      
                         1633-1718                                                 
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                             |                                                     
                         Lady Isabella Bennet                                      
                         2nd Countess of Arlington                                 
                         1667-1722                                                 
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                             |                                                     
                         Charles Fitzroy                                           
                         2nd Duke of Grafton, 3rd Earl of Arlington                
                         1683-1757                                                 
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                             |                                                     
                         Lady Caroline Fitzroy                                     
                         1722-1784