_____________________
                                            |                     
                       _James JOHNSTON _____|
                      | (.... - 1816)       |
                      |                     |_____________________
                      |                                           
 _John JOHNSTON ______|
| (1787 - 1886) m 1813|
|                     |                      _____________________
|                     |                     |                     
|                     |_____________________|
|                                           |
|                                           |_____________________
|                                                                 
|
|--Elizabeth JOHNSTON 
|  (1825 - ....)
|                                            _Robert COBBS _______+
|                                           | (1687 - 1769) m 1724
|                      _Samuel COBB ________|
|                     | (1732 - 1827)       |
|                     |                     |_Crosia FRITH _______
|                     |                       (1691 - 1768) m 1724
|_Judith COBB ________|
  (1785 - 1847) m 1813|
                      |                      _____________________
                      |                     |                     
                      |_Mary MORGAN ________|
                                            |
                                            |_____________________