The Narodnik movement agitated against a ruler with this name who oversaw the Circassian genocide. (10[1])Another ruler (10[1])with this name allied with Napoleon in the first Treaty (10[1])of Tilsit after a defeat at the Battle of Friedland. After (10[1])that ruler with this name died, a group of liberal revolutionaries fought for the accession of his brother Konstantin, (-5[1])sparking the Decembrist (10[1])revolt. (10[2])Under (10[1])a ruler with this name, local assemblies known as zemstvo were created. A reformist tsar with this name ruled Russia from 1855 until his 1881 assassination. (10[1])For 10 points, what first name was shared by three 19th-century tsars of Russia, including one who emancipated the serfs in 1861? (10[1])■END■