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