Wiki information Yatsek:

Felix Dzerzhinsky
Politician, Organization founder, Person, Deceased Person, Name source, Person or entity appearing in film

Felix Edmundovich Dzerzhinsky was a Soviet statesman and a prominent member of Polish and Russian revolutionary movements. His party pseudonyms were Yatsek, Yakub, Pereplyotchik, Franek, Astronom, Yuzef, and Domanski. He was a member of several...

Yatsek Todorov
Cinematographer, Person, Deceased Person

Yatsek Todorov was a cinematographer.