The Decembrist Revolution of 1825 failed to wrest power from the first Romanov czar to bear this name
[DOC] [TLE] SparkNotes: The Russian Revolution (19171918): A Century of ... [PAR] Alexander I - Tsar whose 1825 death prompted the Decembrist Revolt ... 
Nicholas II - Son of Alexander III; was tsar in power during the 1917 revolutions ...