Patriarch Joachim (Russian: Иоахим) (1620—March 17, 1690) was the eleventh Patriarch of Moscow and All Russia, an opponent of the Raskol (the Old Believer schism), and a founder of the Slavic Greek Latin Academy. Born Ivan Petrovich Savelov (Иван Петрович Савелов), Joachim was of noble origin. When his family died in the 1654 epidemic, he became a monk and served in various monasteries, receiving the religious name Joachim upon his tonsure.