_Thomas Robert WILLIAMSON _+
                                               | (1563 - 1610)             
                       _Richard D. WILLIAMSON _|
                      | (1593 - 1659)          |
                      |                        |_Ann ALLEN ________________+
                      |                          (1560 - 1620)             
 _Robert WILLIAMSON __|
| (1624 - 1670)       |
|                     |                         _Richard SHERWOOD _________
|                     |                        |                           
|                     |_Margaret SHERWOOD _____|
|                                              |
|                                              |_Margaret BALDWIN _________
|                                                                          
|
|--Robert WILLIAMSON 
|  
|                                               ___________________________
|                                              |                           
|                      _Arthur ALLEN __________|
|                     |                        |
|                     |                        |___________________________
|                     |                                                    
|_Joan ALLEN _________|
                      |
                      |                         ___________________________
                      |                        |                           
                      |_Alice TUCKER __________|
                                               |
                                               |___________________________