______________________
                                                   |                      
                          _John P. MACKEY _________|
                         |  m 1830                 |
                         |                         |______________________
                         |                                                
 _James Samuel MACKEY ___|
| (1836 - ....) m 1865   |
|                        |                          ______________________
|                        |                         |                      
|                        |_Phebe ALEXANDER ________|
|                           m 1830                 |
|                                                  |______________________
|                                                                         
|
|--Alexander Burton MACKEY 
|  (1871 - ....)
|                                                   ______________________
|                                                  |                      
|                         _Jesse Alexander BURTON _|
|                        | (1807 - 1886) m 1834    |
|                        |                         |______________________
|                        |                                                
|_Margaret Macon BURTON _|
  (1836 - 1886) m 1865   |
                         |                          _John Lewis COBBS Sr._+
                         |                         | (1763 - 1851) m 1790 
                         |_Damaris COBBS __________|
                           (1809 - 1853) m 1834    |
                                                   |_Susannah HAMNER _____+
                                                     (1775 - 1824) m 1790