Original: Grigori Yefimovich Rasputin ( – ) was a Russian mystic who is perceived as having influenced the later days of the Russian Tsar Nicholas II, his wife the Tsaritsa Alexandra, and their only son the Tsarevich Alexei.
Simplified: Rasputin played a part in the lives of the Tsar Nicholas II, his wife, the Tsarina Alexandra and their only son, the Tsarevich Alexei.