_John IV HARCOURT _____+
                                                     | (1290 - 1346)         
                         _John V HARCOURT ___________|
                        | (1320 - 1356)              |
                        |                            |_Isabeau of PARTHENAY _
                        |                              (.... - 1357)         
 _Philippe of HARCOURT _|
| (1355 - 1403)         |
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|                       |_Blanche of PONTHIEU-IVERA _|
|                         (1322 - 1387)              |
|                                                    |_______________________
|                                                                            
|
|--Arschot Guérard of HARCOURT 
|  (.... - 1424)
|                                                     _______________________
|                                                    |                       
|                        ____________________________|
|                       |                            |
|                       |                            |_______________________
|                       |                                                    
|_Jeanne of TILLY ______|
                        |
                        |                             _______________________
                        |                            |                       
                        |____________________________|
                                                     |
                                                     |_______________________