_John Addison COBB _____+
                                             | (1783 - 1855) m 1812   
                        _Howell COBB ________|
                       | (1815 - 1868) m 1835|
                       |                     |_Sarah Robinson ROOTES _+
                       |                       (1792 - 1866) m 1812   
 _John Addison COBB II_|
| (1838 - 1925) m 1881 |
|                      |                      _Zachariah LAMAR _______
|                      |                     | (1769 - 1834) m 1818   
|                      |_Mary Ann LAMAR _____|
|                        (1818 - 1889) m 1835|
|                                            |_Mary Ann ROBINSON _____
|                                              (1784 - 1823) m 1818   
|
|--Martha COBB 
|  (1889 - ....)
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|                      |                                              
|_Martha Lamar BIVENS _|
  (1845 - 1932) m 1881 |
                       |                      ________________________
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                       |_____________________|
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