 Born at Podolskaya street in Saint Petersburg, Russia, Shostakovich was the second of three children of Dmitri Boleslavovich Shostakovich and Sofiya Vasilievna Kokoulina. Shostakovich's paternal grandfather, originally surnamed Szostakowicz, was of Polish Roman Catholic descent (his family roots trace to the region of the town of Vileyka in today's Belarus), but his immediate forebears came from Siberia. A Polish revolutionary in the January Uprising of 1863 – 4, Bolesław Szostakowicz would be exiled to Narym (near Tomsk) in 1866 in the crackdown that followed Dmitri Karakozov's assassination attempt on Tsar Alexander II. When his term of exile ended, Szostakowicz decided to remain in Siberia. He eventually became a successful banker in Irkutsk and raised a large family. His son, Dmitri Boleslavovich Shostakovich, the composer's father, was born in exile in Narim in 1875 and studied physics and mathematics in Saint Petersburg University, graduating in 1899. He then went to work as an engineer under Dmitri Mendeleev at the Bureau of Weights and Measures in Saint Petersburg. In 1903, he married another Siberian transplant to the capital, Sofiya Vasilievna Kokoulina, one of six children born to a Russian Siberian native.
