Edward III                                                
                         King of England 1327-1377                                 
                         1312-1377                                                 
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                         John of Gaunt                                             
                         Duke of Lancaster                                         
                         1340-1399                                                 
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                         Joan Beaufort                                             
                         1379-1440                                                 
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                         Mary Ferrers                                              
                         Lady of Oversley                                          
                         1393-1458                                                 
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                         John Nevill, of Oversley                                  
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                         Joane Nevill, of Oversley                                 
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                         Sir William Gascoigne, of Gawthorpe                       
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                         Elizabeth Gascoigne                                       
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                         Cecily Tailboys                                           
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                         John Ingleby, of Hutton Rudby                             
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                         Elizabeth Ingleby                                         
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                         Mary Cresswell                                            
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                         Mary Brigham                                              
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                         William Wilberfoss                                        
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                         Samuel Wilberfosse, of Beverley                           
                         1663-                                                     
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                         William Wilberforce, of Beverley                          
                         1690-1776                                                 
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                         Robert Wilberforce                                        
                         1728-1768                                                 
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                         William Wilberforce                                       
                         1759-1833