_____________________
                                            |                     
                       _Robert of ROS ______|
                      |                     |
                      |                     |_____________________
                      |                                           
 _William of ROS _____|
|                     |
|                     |                      _William of AUBENEY _+
|                     |                     |                     
|                     |_Isabel of AUBENEY __|
|                                           |
|                                           |_Isabel LNU _________
|                                                                 
|
|--William of ROS 
|  (1288 - 1342)
|                                            _____________________
|                                           |                     
|                      _____________________|
|                     |                     |
|                     |                     |_____________________
|                     |                                           
|_Maude of VAUX ______|
                      |
                      |                      _____________________
                      |                     |                     
                      |_____________________|
                                            |
                                            |_____________________