Saint Anselm of Canterbury (c. 1033 – 21 April 1109) was a Benedictine monk, who held the office of Archbishop of Canterbury from 1093 to 1109. Called the founder of scholasticism, he has been a major influence in Western theology and is famous as the originator of the ontological argument for the existence of God and the satisfaction theory of atonement. Anselm was proclaimed a Doctor of the Church in 1720 by a Papal Bull of Pope Clement XI.
Anselm of Canterbury (Latin: Anselmus Cantuariensis; c. 1033 – 21 April 1109), also called Anselm of Aosta (Italian: Anselmo d'Aosta) after his birthplace and Anselm of Bec (French: Anselme du Bec) after his monastery, was a Benedictine monk, abbot, philosopher and theologian of the Catholic Church, who held the office of archbishop of Canterbury from 1093 to 1109. After his death, he was canonized as a saint; his feast day is 21 April.