Grand Duchess Maria Nikolaevna of Russia (d. 1876)
Grand Duchess Maria Nikolaievna of Russia (Russian: Мария Николаевна) (18 August 1819 – 21 February 1876) was a daughter of Emperor Nicholas I of Russia, and sister of Alexander II. In 1839 she married Maximilian, Duke of Leuchtenberg. She was an art collector and President of the Imperial Academy of Arts in Saint Petersburg.