__
                           |  
                         __|
                        |  |
                        |  |__
                        |     
 _William DEBALIOL _____|
| (1251 - 1313)         |
|                       |   __
|                       |  |  
|                       |__|
|                          |
|                          |__
|                             
|
|--William BALL 
|  (1275 - ....)
|                           __
|                          |  
|                        __|
|                       |  |
|                       |  |__
|                       |     
|_Devorgilla MACDONALD _|
  (1218 - 1290)         |
                        |   __
                        |  |  
                        |__|
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