About Vsevolod Merkulov
Vsevolod Nikolayevich Merkulov was the head of NKGB from February to July 1941, and again from April 1943 to March 1946. He was a leading member of what was later derisively described as the "Beria gang". Merkulov first met Lavrentiy Beria in 1923, when Beria was 24 and had been made deputy chairman of the Georgian GPU. In 1913, Vsevolod Merkulov graduated from the Tiflis Gymnasium with a gold medal and became a student at Saint Petersburg University, Department of Physics and Mathematics, but did not graduate.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.