_Pierre VAN CORTLANDT _+
                                                      | (1720 - 1814)         
                             _Pierre VAN CORTLANDT Jr_|
                            | (1762 - 1848) m 1813    |
                            |                         |_Joanna LIVINGSTON ____+
                            |                           (1722 - 1808)         
 _Pierre VAN CORTLANDT III__|
| (1815 - 1884)             |
|                           |                          _John STEVENSON _______
|                           |                         | (1734 - 1810)         
|                           |_Anne STEVENSON _________|
|                             (1774 - 1821) m 1813    |
|                                                     |_Magdalena DOUW _______+
|                                                       (1750 - 1817)         
|
|--James Stevenson VAN CORTLANDT 
|  (1844 - 1917)
|                                                      _Caleb BECK ___________
|                                                     |                       
|                            _Theodric Romeyn BECK ___|
|                           | (1791 - 1855)           |
|                           |                         |_______________________
|                           |                                                 
|_Catharine Elizabeth BECK _|
  (1818 - 1895)             |
                            |                          _______________________
                            |                         |                       
                            |_Harreit CALDWELL _______|
                                                      |
                                                      |_______________________