_Fulk IV CHÂTEAUDUN _____+
                                                   | (1043 - 1109) m 1089     
                        _Fulk V CHÂTEAUDUN _______|
                       | (1089 - 1143)             |
                       |                           |_Bertrade of MONTFORT ____+
                       |                             (1070 - 1116) m 1089     
 _Amalric CHÂTEAUDUN _|
| (1136 - 1174)        |
|                      |                            _Baldwin II RETHEL _______+
|                      |                           |                          
|                      |_Melisende of RETHEL ______|
|                        (1105 - 1161)             |
|                                                  |_Morphia of MELITENE _____+
|                                                                             
|
|--Isabella of CHÂTEAUDUN 
|  (1172 - 1205)
|                                                   _Joscelin I of COURTENAY _+
|                                                  | (1070 - 1131)            
|                       _Joscelin II of COURTENAY _|
|                      | (.... - 1159)             |
|                      |                           |_Beatrice of ROUPENI _____+
|                      |                             (.... - 1118)            
|_Agnes of COURTENAY __|
  (1136 - 1184)        |
                       |                            __________________________
                       |                           |                          
                       |_Beatrice of SAONE ________|
                                                   |
                                                   |__________________________