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