_William Ramon I of MONTCADA _
                                                      | (1045 - 1120)                
                          _William Ramon of MONTCADA _|
                         | (1090 - 1173)              |
                         |                            |______________________________
                         |                                                           
 _William I of MONTCADA _|
| (1150 - 1172)          |
|                        |                             ______________________________
|                        |                            |                              
|                        |_Beatriu of UNKNOWN ________|
|                                                     |
|                                                     |______________________________
|                                                                                    
|
|--William Raymond of BEARN 
|  
|                                                      ______________________________
|                                                     |                              
|                         _Peter II of BEARN _________|
|                        | (.... - 1153) m 1145       |
|                        |                            |______________________________
|                        |                                                           
|_Mary of BEARN _________|
  (.... - 1187)          |
                         |                             ______________________________
                         |                            |                              
                         |_Matelle of BAUX ___________|
                            m 1145                    |
                                                      |______________________________