_Raymond-Roger of FOIX _+
                                                      | (.... - 1223)          
                           _Roger-Bernard II of FOIX _|
                          | (1195 - 1241) m 1208      |
                          |                           |_Philippa of MONTCADA __+
                          |                                                    
 _Roger IV of FOIX _______|
| (.... - 1264)           |
|                         |                            ________________________
|                         |                           |                        
|                         |_Ermessenda of CASTELLBO __|
|                           (.... - 1237) m 1208      |
|                                                     |________________________
|                                                                              
|
|--Roger-Bernard III of FOIX 
|  (1243 - 1301)
|                                                      ________________________
|                                                     |                        
|                          ___________________________|
|                         |                           |
|                         |                           |________________________
|                         |                                                    
|_Brunissenda of CARDONA _|
                          |
                          |                            ________________________
                          |                           |                        
                          |___________________________|
                                                      |
                                                      |________________________