___________________________
                                                                       |                           
                                   ____________________________________|
                                  |                                    |
                                  |                                    |___________________________
                                  |                                                                
 _James Hampden ROBB _____________|
| (1846 - 1911) m 1868            |
|                                 |                                     ___________________________
|                                 |                                    |                           
|                                 |____________________________________|
|                                                                      |
|                                                                      |___________________________
|                                                                                                  
|
|--Cornelia Van Rensselaer ROBB 
|  (1874 - ....)
|                                                                       _Nathaniel THAYER _________
|                                                                      | (1769 - 1840)             
|                                  _Nathaniel THAYER Jr________________|
|                                 | (1808 - 1883)                      |
|                                 |                                    |_Sarah Parker TOPPAN ______+
|                                 |                                                                
|_Cornelia Van Rensselaer THAYER _|
  (1849 - 1903) m 1868            |
                                  |                                     _Stephen VAN RENSSELAER IV_+
                                  |                                    | (1789 - 1868) m 1817      
                                  |_Cornelia Patterson VAN RENSSELAER _|
                                    (1823 - 1897)                      |
                                                                       |_Harriet Elizabeth BAYARD _+
                                                                         (1799 - 1875) m 1817