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.
