Yakov Smirnoff | Yakov Smushkevich | Yakov Borisovich Zel'dovich | Yakov Yakovlevich Etinger | Yakov Vilner | Yakov Peters | Yakov M. Rabkin | Yakov Malkiel | Yakov Frenkel | 3925 Tret'yakov |
According to historians Greg King and Penny Wilson, Ermakov played a leading role in the executions, and is considered to have been the right hand of chief executioner Yakov Yurovsky.