_____________________
                                             |                     
                        _____________________|
                       |                     |
                       |                     |_____________________
                       |                                           
 _Kinvin WROTH ________|
| (1754 - 1804)        |
|                      |                      _____________________
|                      |                     |                     
|                      |_____________________|
|                                            |
|                                            |_____________________
|                                                                  
|
|--Elizabeth WROTH 
|  (1777 - 1823)
|                                             _John BLAKISTON _____+
|                                            | (1670 - 1723)       
|                       _Benjamin BLAKISTON _|
|                      | (1713 - 1760)       |
|                      |                     |_Anne GUIBERT _______
|                      |                       (1670 - 1739)       
|_Priscilla BLAKISTON _|
  (1741 - 1812)        |
                       |                      _____________________
                       |                     |                     
                       |_Sarah JOYCE ________|
                         (1722 - 1764)       |
                                             |_____________________