_Henry COBB _________+
                                            | (1794 - 1830) m 1817
                       _James F. COBB ______|
                      | (1819 - 1889) m 1842|
                      |                     |_Elizabeth SHETLEY __+
                      |                       (1799 - ....) m 1817
 _James T. COBB ______|
| (1849 - 1916) m 1871|
|                     |                      _____________________
|                     |                     |                     
|                     |_Martha DUNCAN ______|
|                       (1823 - 1908) m 1842|
|                                           |_____________________
|                                                                 
|
|--George B. COBB 
|  (1878 - ....)
|                                            _____________________
|                                           |                     
|                      _____________________|
|                     |                     |
|                     |                     |_____________________
|                     |                                           
|_Martha C. COOPER ___|
  (1851 - ....) m 1871|
                      |                      _____________________
                      |                     |                     
                      |_____________________|
                                            |
                                            |_____________________