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, Jewish Alternate transcription of Yurovsky. This was the last name of Yakov Yurovskiy, a notable Bolshevik. He led the execution of the Romanovs.