_____________________
                                               |                     
                       ________________________|
                      |                        |
                      |                        |_____________________
                      |                                              
 _R. T. GIBBS ________|
| (.... - 1850) m 1842|
|                     |                         _____________________
|                     |                        |                     
|                     |________________________|
|                                              |
|                                              |_____________________
|                                                                    
|
|--Margaret GIBBS 
|  (1844 - ....)
|                                               _Alexander THOM _____
|                                              | (1724 - 1791)       
|                      _George Slaughter THOM _|
|                     | (1789 - 1833) m 1818   |
|                     |                        |_Elizabeth TRIPLETT _
|                     |                          (1751 - 1789)       
|_Ann Frances THOM ___|
  (1818 - 1850) m 1842|
                      |                         _____________________
                      |                        |                     
                      |_Margaret HANSBROUGH ___|
                        (1800 - 1854) m 1818   |
                                               |_____________________