Patriarch Nikon of Moscow (d. 1681)
Nikon (Russian: Ни́кон, Old Russian: Нїконъ), born Nikita Minin (Никита Минин; 7 May 1605 – 17 August 1681) was the seventh Patriarch of Moscow and all Rus' of the Russian Orthodox Church, serving officially from 1652 to 1666. He was renowned for his eloquence, energy, piety and close ties to Tsar Alexis of Russia. Nikon introduced many reforms, including liturgical reforms that were unpopular among conservatives. These divisions eventually led to a lasting schism known as Raskol (schism) in the Russian Orthodox Church. For many years, he was a dominant political figure, often equaling or even overshadowing the Tsar. In December 1666, Nikon was tried by a synod of church officials, deprived of all his sacerdotal functions, and reduced to the status of a simple monk.