_Hugh WILLIAMSON ____
                                                | (1720 - 1813)       
                       _Alden WILLIAMSON Sr.____|
                      | (1750 - 1816) m 1790    |
                      |                         |_Elizabeth STEWART __
                      |                           (1718 - ....)       
 _James WILLIAMSON ___|
| (1813 - ....)       |
|                     |                          _____________________
|                     |                         |                     
|                     |_Mary Elizabeth JACKSON _|
|                       (1772 - ....) m 1790    |
|                                               |_____________________
|                                                                     
|
|--Cassie WILLIAMSON 
|  
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|                      _________________________|
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|                     |                                               
|_Cynthia JAMES ______|
                      |
                      |                          _____________________
                      |                         |                     
                      |_________________________|
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                                                |_____________________