Keywords: Pope Gregory I.jpg Gregory I became pope in 590 and effected great changes in the Roman Catholic church He used the office to govern and provide pastoral care to a large area during a time of little civil administration He also reformed church liturgy introducing Gregorian chant Gregory's writings about saints including Saint Benedict helped the growth of Benedictine monasteries in the Middle Ages http //pro corbis com/popup/Enlargement aspx mediauids 5316c2a1-24ae-4673-b8db-12b8fffcd6e0 date modern - fake medieval Author Public domain PD-Art Gregorius I Magnus in miniatures Renaissance paintings of saints |