Grand Duchess Olga Nikolaevna of Russia ( Olga Nikolaevna Romanova ) ( Russian : Великая Княжня Ольга Николаевна ( Velikaya Knyazhna Ol' ga Nikolaevna ) ; November 15 ( O.S. November 3 ) 1895 - July 17 , 1918 ) was the eldest daughter of the last autocratic ruler of the Russian Empire , Emperor Nicholas II , and of Empress Alexandra of Russia .
Grand Duchess Olga Nikolaevna of Russia ( Olga Nikolaevna Romanova ) ( Russian : Великая Княжна Ольга Николаевна ; November 15 ( O.S. November 3 ) 1895 , November 16 after 1900 - July 17 , 1918 ) was the oldest daughter of Tsar Nicholas II of Russia , the last sovereign of Imperial Russia , and his wife Alexandra Fyodorovna .