Adelelmus of Flanders was a Benedictine monk and hermit who lived in France during the twelfth century. A follower of Bernard of Thiron, he sought a life of prayer and fasting alongside the hermit Aubert. He eventually established a monastic community at Étival-en-Charnie using land granted by Viscount Raoul VII de Beaumont-au-Maine. While his male monastery was dedicated to Saint Nicholas, the nunnery he helped create proved to be more enduring. He is recognized as a saint in the Catholic Church.