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 the 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 which eventually led to a lasting schism known as Raskol in the Russian Orthodox Church. For many years he was a dominant political figure, often equaling or even overshadowing the Tsar. His liturgical reforms were unpopular among conservatives. 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.
Son of a Mordovian peasant farmer named Mina, he was born on 7 May 1605 in the village of Valmanovo, 90 versts (96 km or 60 miles) from Nizhny Novgorod. His mother died soon after he was born, and his father remarried. His stepmother mistreated him. He learned reading and writing with the parish priest. At the age of 12 he ran away from home to Makaryev Monastery where he remained until 1624 as a novice.
Then he returned home due to his parents' insistence, married, and became a parish priest in a nearby village.
His eloquence attracted attention of some Moscow merchants who were coming to the area because of a famous trade fair held on Makaryev Monastery grounds. Through their efforts he was invited to serve as a priest at a populous parish in the capital.
He served there about ten years. Meanwhile, by 1635, his three little children died. He saw that as a providential sign and decided to become a monk. First he persuaded his wife to take the veil and then withdrew himself to a desolate hermitage on the isle of Anzersky on the White Sea. On becoming a monk he took the name of Nikon.