YefimovichRussian Grigori Yefimovich who is best known as "Rasputin" was a Russian peasant, mystic and private adviser to the Romanovs (Tsar Nicholas II and his wife Tsarina Alexandra in the early 20th century).
YezhovmRussian Derived from Russian word "ёж (yozh)" meaning hedgehog. Yezhov was the last name of Nikolay Yezhov, the leader of the Soviet NKVD from 1936-38 who is known for Yezhovshchina.
YurovskiymRussian, Polish (Russified) Alternate transcription of Yurovsky. This was the last name of Yakov Yurovskiy, a notable Bolshevik. He led the execution of the Romanovs.
YushchenkoUkrainian Means "child of Yukhym". Viktor Yushchenko was the Ukrainian president from 2005 to 2010, and a major figure in the Orange Revolution.