_Joseph B. ALLISON ___
                                                    | (1778 - 1845) m 1805 
                           _Richard Booker ALLISON _|
                          | (1808 - 1883) m 1833    |
                          |                         |_Catherine LNU _______
                          |                           (1774 - 1851) m 1805 
 _William Booker ALLISON _|
| (1837 - ....) m 1860    |
|                         |                          _William Tandy COBBS _+
|                         |                         | (1783 - 1870) m 1819 
|                         |_Sarah Wash COBBS _______|
|                           (1814 - 1887) m 1833    |
|                                                   |_Mary KEY ____________+
|                                                     (1785 - 1846) m 1819 
|
|--Robert ALLISON 
|  (1858 - ....)
|                                                    ______________________
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|                          _________________________|
|                         |                         |
|                         |                         |______________________
|                         |                                                
|_Susan N. WALDEN ________|
  (1839 - 1862) m 1860    |
                          |                          ______________________
                          |                         |                      
                          |_________________________|
                                                    |
                                                    |______________________