_Jesse MAYFIELD Sr._______
                                                        | (1770 - 1838) m 1788     
                         _Pearson Brummett MAYFIELD Sr._|
                        | (1789 - 1832) m 1816          |
                        |                               |_Penelope BRUMMETT _______
                        |                                 (1770 - 1848) m 1788     
 _John G. MAYFIELD _____|
| (1836 - 1875) m 1855  |
|                       |                                _Samuel MCJUNKIN Sr.______
|                       |                               | (1759 - 1841) m 1797     
|                       |_Nancy MCJUNKIN _______________|
|                         (1797 - 1858) m 1816          |
|                                                       |_Sara Elizabeth BRUMMETT _
|                                                         (1770 - 1860) m 1797     
|
|--John S. MAYFIELD 
|  (1871 - ....)
|                                                        _Joseph COBBS Sr._________+
|                                                       | (1767 - 1840) m 1794     
|                        _Joseph COBBS Jr.______________|
|                       | (1806 - 1885) m 1823          |
|                       |                               |_Mary LNU ________________
|                       |                                 (1767 - 1856) m 1794     
|_Mary Elizabeth COBBS _|
  (1833 - ....) m 1855  |
                        |                                _Mathias FIRESTONE Sr.____+
                        |                               | (1777 - 1850) m 1798     
                        |_Sarah FIRESTONE ______________|
                          (1804 - 1840) m 1823          |
                                                        |_Mary HILL _______________+
                                                          (1773 - 1836) m 1798