From 590, Saint Gregory I the Great, known pope, increased authority, enforced rules of life for the clergy, and sponsored many notably important missionary expeditions of Saint Augustine of Canterbury in 596 to Britain.
Commonly vigilant Gregory guarded the doctrine of the Church. He founded numerous monasteries, including a school for the training of church musicians. He collected the melodies and plainsong, so associated and now Gregorian chants. In his time, he served as a monk, an abbot, and a leader of Italy. He also momentously influenced the Catholic Church through doctrine, organization, and discipline. People thought of his foremost skill in grammar, rhetoric, and dialectic in all Rome, Gregory of Tours tells us. Gregory sent as a patron of England. Gregory wrote Dialogues, one accomplishment, a book on the Lives of the Saints. Boniface VIII proclaimed him as a doctor of the church in 1295.