Dom Guéranger was a French Benedictine monk and liturgical scholar, born in 1805. He is best known for founding the Abbey of Solesmes in 1833, which played a crucial role in the revival of Gregorian chant and the study of the Roman Catholic Church liturgy. His work emphasized the importance of tradition in worship and the beauty of sacred music. Guéranger authored several influential texts, including "The Liturgical Year," which outlines the significance of the Church's calendar and its feasts. His efforts contributed to the broader Liturgical Movement in the 19th and 20th centuries, promoting a deeper understanding of the Church's rites and practices.