_________________________
                                            | 
                       _____________________|
                      |                     |
                      |                     |_________________________ 
                      |                        
 _Henry Killen________|
|                     |
|                     |                      _________________________
|                     |                     | 
|                     |_____________________|
|                                           |
|                                           |_________________________
|                                             
|
|--_Elizabeth H. Killen_ 
|   (1816 - 1892)
|                                            _Thomas Houston__________
|                                           | 
|                      _Henry Rufus Houston_|
|                     |                     |
|                     |                     |_Agnes - - - - - - -_____
|                     |                       
|_Sarah Houston_______|
                      |
                      |                      _________________________
                      |                     | 
                      |_Keziah Criddle______|
                                            |
                                            |_________________________