_________________________________
                                                  |                                 
                        _Harrison ROBERTSON ______|
                       | (1822 - 1908) m 1850     |
                       |                          |_________________________________
                       |                                                            
 _Harrison ROBERTSON __|
| (1865 - 1938)        |
|                      |                           _Jaquelin Ambler MARSHALL _______+
|                      |                          | (1787 - 1852) m 1819            
|                      |_Eliza Clarkson MARSHALL _|
|                        (1827 - 1868) m 1850     |
|                                                 |_Eliza Letitia Steptoe CLARKSON _
|                                                   (1798 - 1868) m 1819            
|
|--Harison Marshall ROBERTSON 
|  (1892 - 1958)
|                                                  _________________________________
|                                                 |                                 
|                       __________________________|
|                      |                          |
|                      |                          |_________________________________
|                      |                                                            
|_Mary Longley VAWTER _|
  (1867 - 1944)        |
                       |                           _________________________________
                       |                          |                                 
                       |__________________________|
                                                  |
                                                  |_________________________________