_Nicholas I Pavlovich HOLSTEIN-GOTTORP-ROMANOV __________+
                                                                                                      | (1796 - 1855)                                           
                                                       _Michael Nikolaevich HOLSTEIN-GOTTORP-ROMANOV _|
                                                      | (1832 - 1909)                                 |
                                                      |                                               |_Friederike Louise Charlotte Wilhelmine of HOHENZOLLERN _+
                                                      |                                                 (1798 - 1860)                                           
 _George Mikhailovich HOLSTEIN-GOTTORP-ROMANOV _______|
| (1863 - 1919)                                       |
|                                                     |                                                _Leopold ZÄHRINGEN _____________________________________+
|                                                     |                                               | (1790 - 1852) m 1819                                    
|                                                     |_Cecilie Auguste of ZÄHRINGEN ________________|
|                                                       (1839 - 1891)                                 |
|                                                                                                     |_Sophie of HOLSTEIN-GOTTORP _____________________________+
|                                                                                                       (1801 - 1865) m 1819                                    
|
|--Nina Georgievna of HOLSTEIN-GOTTORP-ROMANOV 
|  (1901 - 1974)
|                                                                                                      _________________________________________________________
|                                                                                                     |                                                         
|                                                      _______________________________________________|
|                                                     |                                               |
|                                                     |                                               |_________________________________________________________
|                                                     |                                                                                                         
|_Maria of SCHLESWIG-HOLSTEIN-SONDERBURG-GLÜCKSBURG _|
  (1876 - 1940)                                       |
                                                      |                                                _________________________________________________________
                                                      |                                               |                                                         
                                                      |_______________________________________________|
                                                                                                      |
                                                                                                      |_________________________________________________________