Grand Duchess Olga Nikolaevna of Russia (Alexander the Liberator)

Grand Duchess Olga Nikolaevna of Russia (Olga Nikolaevna Romanova) (Russian: Великая Княжна Ольга Николаевна/Velikaya Knyazhna Ol'ga Nikolaevna); 15 November [O.S. 3 November] 1895 – Summer 1944) was the eldest sister of Emperor Alexei II of Russia and the wife of the ethnic Polish Belarusian nationalist Stanisław Bułak-Bałachowicz.