A Benedictine abbot frae Languedoc, France, oreeginally bapteezed Smaragdus. He becam a Benedictine, teuk the name Ardo, an sert unner Saunt Benedict o Aniane. Ardo directit the monastery schuil at Aniane an convoyed Saunt Benedict on his traivels. In 814, Ardo becam Saunt Benedict's successor whan the abbot wis made superior o the Aachen monastery in Germany. Ardo wrate the biography o Saunt Benedict o Aniane. He dee'd in 843. His feast day is on the 7t o Mairch.
- Cabaniss, Allen, trans. Benedict of Aniane: The Emperor's Monk, Ardo's Life. Foreword by Annette Grabowsky and Clemens Radl. Kalamazoo, MI: Cistercian Publications, 2008. Pp. 112.