_____________________
                                                               |                     
                               _Sergei Plantonovich OBOLENSKY _|
                              | (1890 - 1978) m 1924           |
                              |                                |_____________________
                              |                                                      
 _Ivan Sergeyevich OBOLENSKY _|
| (1925 - 2019) m 1949        |
|                             |                                 _John Jacob ASTOR IV_+
|                             |                                | (1864 - 1912) m 1891
|                             |_Ava Alice Muriel ASTOR ________|
|                               (1902 - 1956) m 1924           |
|                                                              |_Ava Lowle WILLING __
|                                                                (1868 - 1958) m 1891
|
|--Marina Ivanovna OBOLENSKY 
|  (1951 - ....)
|                                                               _____________________
|                                                              |                     
|                              ________________________________|
|                             |                                |
|                             |                                |_____________________
|                             |                                                      
|_Clarire Elizabeth MCGINNIS _|
  (1929 - 2015) m 1949        |
                              |                                 _____________________
                              |                                |                     
                              |________________________________|
                                                               |
                                                               |_____________________