__
                                            |  
                       _____________________|
                      |                     |
                      |                     |__
                      |                        
 _Thomas GREY ________|
|                     |
|                     |                      __
|                     |                     |  
|                     |_____________________|
|                                           |
|                                           |__
|                                              
|
|--Elizabeth GREY 
|  (1356 - 1412)
|                                            __
|                                           |  
|                      _William PRESSENE ___|
|                     | (1308 - 1355)       |
|                     |                     |__
|                     |                        
|_Margaret PRESSENE __|
  (1332 - 1383)       |
                      |                      __
                      |                     |  
                      |_____________________|
                                            |
                                            |__