 The Latin Rite Catholic Church of western and central Europe split with the eastern Greek-speaking Patriarchates in the Christian East–West Schism, also known as the "Great Schism", during the Gregorian Reforms (calling for a more central status of the Roman Catholic Church Institution), three months after Pope Leo IX's death in April 1054.Following the 1054 Great Schism, both the Western Church and Eastern Church continued to consider themselves "uniquely" orthodox and catholic.Augustine wrote in On True Religion