Konstantin Josef Jireček was an Austro-Hungarian Czech historian, politician, diplomat, and Slavist. He was the founder of Bohemian Balkanology and Byzantine studies, and wrote extensively on Bulgarian and Serbian history. Jireček was also a minister in the government of the Principality of Bulgaria for a couple of years.
Konstatin Gennadievich Kapkov is a Russian historian, writer, theologian, and creator of the database of the military and naval clergy of the Russian Empire of the 19th and early 20th centuries.
He has published several historical works, mainly on the reign of Nicholas II and the history of the Russian Orthodox church.
Konstantin Konstantinowitsch Khudoley (1951) is a member of the steering committee of the Petersburg Dialogue and the vice rector, vice chairman of the science council and the manager of the Chair of European Studies in Saint Petersburg State University.
Konstantin Stepanovich Kuzakov was a Soviet journalist and politician and one of the organizers of Soviet television, radio and cinema. Kuzakov claimed that he was an illegitimate child of Joseph Stalin, though there is no proof of this. Kuzakov alleged that his mother, Maria Kuzakova, had been Stalin's landlady and mistress during his 1911 exile in Solvychegodsk. One of Stalin's biographers, Simon Sebag Montefiore, supported Kuzakov's claims. According to Montefiore, Maria was still pregnant when Stalin left his exile.
