__
                                                                           |  
                                               _William Thomas WELCH , Sr._|__
                                              | (1680 - 1742) m 1702          
                       _John WELCH ___________|
                      | (1712 - 1769) m 1737  |
                      |                       |                             __
                      |                       |                            |  
                      |                       |_Susanna ? _________________|__
                      |                         (1680 - ....) m 1702          
 _Nicholas WELCH _____|
| (1740 - 1814) m 1757|
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|                     |                        ____________________________|__
|                     |                       |                               
|                     |_Elizabeth WHITESIDES _|
|                       (1715 - 1742) m 1737  |
|                                             |                             __
|                                             |                            |  
|                                             |____________________________|__
|                                                                             
|
|--Zachariah WELCH 
|  (1775 - ....)
|                                                                           __
|                                                                          |  
|                                              ____________________________|__
|                                             |                               
|                      _______________________|
|                     |                       |
|                     |                       |                             __
|                     |                       |                            |  
|                     |                       |____________________________|__
|                     |                                                       
|_Elizabeth ? ________|
  (1740 - 1810) m 1757|
                      |                                                     __
                      |                                                    |  
                      |                        ____________________________|__
                      |                       |                               
                      |_______________________|
                                              |
                                              |                             __
                                              |                            |  
                                              |____________________________|__