Boles%C5%82aw Bierut
Bolesaw Bierut born Bolesaw RutkowskiApril 1892 March 1956 also known under assumed names Jerzy Bolesaw Bielak and Bolesaw Birkowski was a Polish Communist leader, NKVD agent, and a hardline Stalinist who became President of Poland after the Soviet takeover of the country in the aftermath of World War II .
Bierut was born Bolesaw Rutkowski in Rury Jezuickie, now a part of Lublin, to Wojciech Rutkowski, a village teacher, and his wife Maria . He later adopted the surname Bierut combining the first syllables of his parents surnames. In 1918 he took courses at the Warsaw School of Economics. From 192430, he was in Moscow for training at the school of the Communist International.
Source: Wikipedia