Blessed Columba Marmion (1858–1923) was an Irish Benedictine monk, theologian, and spiritual writer whose teachings have profoundly influenced Catholic spirituality. Born Joseph Aloysius Marmion in Dublin to an Irish father and French mother, he entered the diocesan seminary in 1874 and completed his theological studies at the College of the Propagation of the Faith in Rome. Ordained a priest in 1881, Marmion initially served as a parish curate and seminary professor in Dublin. In 1886, feeling called to monastic life, he joined the Abbey of Maredsous in Belgium, taking the name Columba. Despite challenges adapting to a new culture and language, he made his solemn profession in 1891 and quickly became known for his spiritual depth and leadership qualities.‍

Marmion's monastic journey led him to the Abbey of Mont César in Louvain, where he served as prior, spiritual director, and theology professor. His reputation as a spiritual guide grew, attracting many, including future Cardinal Désiré-Joseph Mercier. In 1909, he was elected the third Abbot of Maredsous, overseeing a community of over 100 monks. His tenure was marked by spiritual and intellectual growth, even amidst the trials of World War I. Marmion's leadership emphasized the Benedictine values of liturgical prayer and monastic discipline, fostering a vibrant spiritual life within the abbey.‍

As a spiritual writer, Marmion authored several influential works, including Christ, the Life of the Soul, Christ in His Mysteries, and Christ, the Ideal of the Monk. His writings, deeply rooted in Scripture and the teachings of St. Paul and St. Benedict, emphasized the centrality of Christ and the concept of divine adoption. These works have been translated into multiple languages and are considered classics of Christian spirituality.