_Ambrose COBB _______+
                                                    | (1775 - 1850) m 1797
                         _Jesse Bradley COBB _______|
                        | (1822 - 1898) m 1844      |
                        |                           |_Susannah BRADLEY ___+
                        |                             (1780 - 1850) m 1797
 _Ambrose Houston COBB _|
| (1853 - 1920) m 1879  |
|                       |                            _____________________
|                       |                           |                     
|                       |_Judith Mary Ann JOHNSTON _|
|                         (1822 - 1900) m 1844      |
|                                                   |_____________________
|                                                                         
|
|--Ada Jones COBB 
|  (1886 - 1907)
|                                                    _James JOHNSTON _____
|                                                   | (1786 - ....)       
|                        _James Thomas JOHNSTON ____|
|                       | (1822 - ....) m 1850      |
|                       |                           |_____________________
|                       |                                                 
|_Martha Ann JOHNSTON __|
  (1853 - 1892) m 1879  |
                        |                            _____________________
                        |                           |                     
                        |_Mahala Ann RAINEY ________|
                          (1829 - ....) m 1850      |
                                                    |_____________________