__________________________
                                               |                          
                          _Archambaud GRAILLY _|
                         | (1330 - 1412)       |
                         |                     |__________________________
                         |                                                
 _Gaston I FOIX-GRAILLY _|
| (.... - 1541)          |
|                        |                      _Roger-Bernard V of FOIX _+
|                        |                     | (1330 - 1381)            
|                        |_Isabella of FOIX ___|
|                          (1361 - 1428)       |
|                                              |_Géraude of NAVAILLES ___
|                                                                         
|
|--John FOIX 
|  (1410 - 1485)
|                                               __________________________
|                                              |                          
|                         _____________________|
|                        |                     |
|                        |                     |__________________________
|                        |                                                
|_Marguerite of ALBRET __|
                         |
                         |                      __________________________
                         |                     |                          
                         |_____________________|
                                               |
                                               |__________________________