_William II TAILLEFER ______+
                                                              |                            
                                    _Arnald II TAILLEFER _____|
                                   |                          |
                                   |                          |____________________________
                                   |                                                       
 _William IV TAILLEFER ____________|
|                                  |
|                                  |                           ____________________________
|                                  |                          |                            
|                                  |__________________________|
|                                                             |
|                                                             |____________________________
|                                                                                          
|
|--William TAILLEFER 
|  
|                                                              _Fulk II INGELGER __________+
|                                                             | (0905 - 0960)              
|                                   _Geoffrey I INGELGER _____|
|                                  | (0938 - 0987)            |
|                                  |                          |_Gerberga of BLOIS _________+
|                                  |                                                       
|_Ermengarde-Gerberga of INGELGER _|
  (0956 - 1024)                    |
                                   |                           _Robert HERBERTIAN _________+
                                   |                          | (0907 - 0968)              
                                   |_Adélaide of HERBERTIAN _|
                                     (0934 - 0982)            |
                                                              |_Adelaide-Werra of BOSONID _+