_________________________________
                                                    |                                 
                               _____________________|
                              |                     |
                              |                     |_________________________________
                              |                                                       
 _Frederic CROMWELL Jr________|
| (1900 - 1973)               |
|                             |                      _________________________________
|                             |                     |                                 
|                             |_____________________|
|                                                   |
|                                                   |_________________________________
|                                                                                     
|
|--Seymour Legrand CROMWELL II
|  (1934 - 1977)
|                                                    _Robert Edward LIVINGSTON _______+
|                                                   | (1820 - 1889)                   
|                              _Goodhue LIVINGSTON _|
|                             | (1867 - 1951) m 1896|
|                             |                     |_Susan Maria of PEYSTER _________+
|                             |                       (1823 - 1910)                   
|_Cornelia Thayer LIVINGSTON _|
  (1903 - 1975)               |
                              |                      _James Hampden ROBB _____________
                              |                     | (1846 - 1911) m 1868            
                              |_Louisa ROBB ________|
                                (1877 - 1960) m 1896|
                                                    |_Cornelia Van Rensselaer THAYER _+
                                                      (1849 - 1903) m 1868