Princess Marina Petrovna of Russia Princess Marina Petrovna of Russia Princess Marina Petrovna of Russia (11 March 1892 – 15 May 1981) was a daughter of Grand Duke Peter Nikolaevich of Russia and his wife, Grand Duchess Militza Nicholaevna, born Princess of Montenegro. A great-granddaughter of Tsar Nicholas I of Russia, she was born in Nice and grew up in the last period of Imperial Russia, mostly in Znamenka, her father's summer palace near Peterhof. Princess Marina was a gifted artist, showing talent for drawing and painting. She studied painting first with a teacher from the senior school in Yalta and then in St Petersburg
Duke Peter Alexandrovich of Oldenburg Duke Peter Alexandrovich of Oldenburg Peter Alexandrovich of Oldenburg (Duke Peter Friedrich Georg von Oldenburg) (21 November 1868 – 11 March 1924) was the first husband of Grand Duchess Olga Alexandrovna of Russia, the youngest sister of Tsar Nicholas II. He was born in Saint Petersburg, the only child of Duke Alexander Petrovich of Oldenburg (1844–1932) and Eugénie Maximilianovna of Leuchtenberg (1845–1925). His mother was a granddaughter of Tsar Nicholas I of Russia through Nicholas's daughter, Grand Duchess Maria Nikolayevna, and his father was a great-grandson of Tsar Paul I of Russia through his paternal grandmother Grand Duchess Catherine Pavlovna.