____________________________________
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                               __________________________________________________________________________|
                              |                                                                          |
                              |                                                                          |____________________________________
                              |                                                                                                               
 _Guillermo SIERRA-Y-URIBE ___|
| (1984 - ....) m 2017        |
|                             |                                                                           ____________________________________
|                             |                                                                          |                                    
|                             |__________________________________________________________________________|
|                                                                                                        |
|                                                                                                        |____________________________________
|                                                                                                                                             
|
|--Konstantin Nicholas SIERRA 
|  (2019 - ....)
|                                                                                                         ____________________________________
|                                                                                                        |                                    
|                              _Peter GALITZINE _________________________________________________________|
|                             | (1955 - ....) m 1981                                                     |
|                             |                                                                          |____________________________________
|                             |                                                                                                               
|_Tatiana Petrovna GALITZINE _|
  (1984 - ....) m 2017        |
                              |                                                                           _Rudolf Syringus HABSBURG-LORRAINE _+
                              |                                                                          | (1919 - 2010) m 1953               
                              |_Maria Anna Charlotte Zita Elisabeth Regina Therese of HABSBURG-LORRAINE _|
                                (1954 - ....) m 1981                                                     |
                                                                                                         |_Xenia of CZERNICHEV-BESOBRASOV ____
                                                                                                           (1929 - 1968) m 1953