_______________________
                                            |                       
                       _____________________|
                      |                     |
                      |                     |_______________________
                      |                                             
 _William BONVILLE ___|
|                     |
|                     |                      _______________________
|                     |                     |                       
|                     |_____________________|
|                                           |
|                                           |_______________________
|                                                                   
|
|--Elizabeth BONVILLE 
|  
|                                            _Reynold GREY _________+
|                                           |                       
|                      _Reynold GREY _______|
|                     |                     |
|                     |                     |_Eleanor LE STRANGE ___+
|                     |                                             
|_Margaret GREY ______|
                      |
                      |                      _Thomas of ROS ________
                      |                     |                       
                      |_Margaret of ROS ____|
                                            |
                                            |_Beatrice of STAFFORD _+