Alexander II (Russian: Александр II Николаевич, Aleksandr II Nikolaevich) (29 April [O.S. 17 April] 1818, Moscow – 13 March [O.S. 1 March] 1881, Saint Petersburg), also known as Alexander the Liberator (Russian: Александр Освободитель, Aleksandr Osvoboditel') was the Emperor of the Russian Empire from 3 March 1855 until his assassination in 1881. He was also the King of Poland and the Grand Prince of Finland.