|Saint Ardo Smaragdus|
Aniane, Hérault, France
Ardo Smaragdus (died March 843 AD) was a hagiographer. He entered the monastery of Aniane, in Hérault, as a boy, and was brought up by Saint Benedict of Aniane. He was ordained a priest and made head of the monastery school.
Smaragdus wrote a life of St. Benedict of Aniane in 822, and was himself honored as a saint at his monastery after his death.
- Cabaniss, Allen, trans. Benedict of Aniane: The Emperor's Monk, Ardo's Life. Foreword by Annette Grabowsky and Clemens Radl. Kalamazoo, Michigan: Cistercian Publications, 2008. Pp. 112.