_____________________
                                             |                     
                       ______________________|
                      |                      |
                      |                      |_____________________
                      |                                            
 _John MCKENZIE ______|
| (1780 - 1837) m 1810|
|                     |                       _____________________
|                     |                      |                     
|                     |______________________|
|                                            |
|                                            |_____________________
|                                                                  
|
|--David Jesse MCKENZIE 
|  (1811 - 1878)
|                                             _____________________
|                                            |                     
|                      _David Clinton COCKE _|
|                     | (1756 - 1827) m 1773 |
|                     |                      |_____________________
|                     |                                            
|_Martha COX _________|
  (1780 - 1850) m 1810|
                      |                       _Elijah LEACH _______
                      |                      | (1726 - 1778) m 1745
                      |_Jemima LEACH ________|
                        (1749 - 1834) m 1773 |
                                             |_Jemima SNOW ________+
                                               (1722 - 1763) m 1745