_Routrou III CHÂTEAUDUN ____+
                                                      | (1080 - 1144)               
                             _Rotrou IV CHÂTEAUDUN __|
                            | (1135 - 1191)           |
                            |                         |_Hawise of SALISBURY ________
                            |                                                       
 _Geoffrey III CHÂTEAUDUN _|
| (.... - 1202) m 1189      |
|                           |                          _____________________________
|                           |                         |                             
|                           |_Matilda of BLOIS _______|
|                                                     |
|                                                     |_____________________________
|                                                                                   
|
|--Thomas CHÂTEAUDUN 
|  (1195 - 1217)
|                                                      _Henry X WELF _______________+
|                                                     | (1108 - 1139)               
|                            _Henry III WELF _________|
|                           | (1129 - 1195)           |
|                           |                         |_Gertrude of SÜPPLINBURGER _+
|                           |                           (1115 - 1143)               
|_Matilda of WELF __________|
  (1172 - 1210) m 1189      |
                            |                          _Henry II PLANTAGENET _______+
                            |                         | (1132 - 1189) m 1152        
                            |_Matilda of PLANTAGENET _|
                              (1155 - 1189)           |
                                                      |_Eleanor of POITIERS ________+
                                                        (1122 - 1204) m 1152