| Marina Petrovna Romanov (maid. name Princess of Russia) | |
| B: | 11 March 1892 |
| Nice, Alpes-Maritimes, Provence-Alpes-Cote d'Azur, France | |
| D: | 15 May 1981 |
| Six-Fours-les-Plages, Var, Provence-Alpes-Cote d'Azur, France | |
| Prince Aleksandr Nikolaievich Galitzine |
| Prince Aleksandr Nikolaievich Galitzine | |
| B: | 13 Oct 1885 |
| St Petersburg, Russia | |
| M: | 4 Feb 1927 |
| D: | 24 Mar 1974 |
| Toulon, Stark, Illinois, United States | |
| Roman Petrovich Romanov (maid. name Prince of Russia) | |
| B: | 17 October 1896 |
| Peterhof Palace, Saint Petersburg, Russian Empire | |
| D: | 23 October 1978 |
| Rome, Roma, Lazio, Italy | |
| Sofia Petrovna Romanov (maid. name Princess of Russia) | |
| B: | 3 March 1898 |
| Dulber, Crimea, Russian Empire | |
| D: | 3 March 1898 |
| Dulber, Crimea, Russian Empire | |
| Nadejda Petrovna Romanov (maid. name Princess of Russia) | |
| B: | 3 March 1898 |
| Dulber, Crimea, Russian Empire | |
| D: | 21 April 1988 |
| Chantilly, Oise, Picardie, France | |
|
| Petr Nikolaievich Romanov |
| Petr Nikolaievich Romanov | |
| B: | 10 Jan 1864 |
| St Petersburg, Russia | |
| D: | 1931 |
| Antibes, Alpes-Maritimes, Provence-Alpes-Cote d'Azur, France | |
| Milica Petrović-Njegoš, Princess of Montenegro | |
| B: | 14 July 1866 |
| Cetinje, Montenegro | |
| M: | 26 July 1889 |
| St Petersburg, Russian Empire | |
| D: | 5 September 1951 |
| Alexandra, Egypt | |