_James COBB _________+
                                            | (1770 - 1805) m 1790
                       _Henry COBB _________|
                      | (1794 - 1830) m 1817|
                      |                     |_Sarah BEACH ________+
                      |                       (1774 - 1823) m 1790
 _James F. COBB ______|
| (1819 - 1889) m 1842|
|                     |                      _Jacob SHETLEY ______
|                     |                     |                     
|                     |_Elizabeth SHETLEY __|
|                       (1799 - ....) m 1817|
|                                           |_Mary LNU ___________
|                                                                 
|
|--Robert H. COBB 
|  (1844 - ....)
|                                            _____________________
|                                           |                     
|                      _____________________|
|                     |                     |
|                     |                     |_____________________
|                     |                                           
|_Martha DUNCAN ______|
  (1823 - 1908) m 1842|
                      |                      _____________________
                      |                     |                     
                      |_____________________|
                                            |
                                            |_____________________