He was appointed to that position by Pope Benedict XVI on 11 September 2007, succeeding Archbishop Hubert Barbier. The new archbishop, who also received the honorary title of patriarch and primate of Aquitaine, was greeted in his cathedral on 14 October and took his seat in the presence of the bishops of the province: Archbishops Bernard-Nicolas Aubertin, Metropolitan Archbishop of Tours; André Fort, bishop of Orleans; Michel Pansard, Bishop of Chartres; Maurice de Germiny, Bishop of Blois.
He completed theological studies at the Strasbourg Faculty of Catholic Theology from 1967 to 1971. He holds two licenses, the first in letters (in German) and the second in theology. He was ordained a priest on 28 June 1970.
He was assigned responsibility in 1976 throughout the diocese for catechesis, and was named head of the permanent diaconate. He continued to also be a chaplain in high schools. From 1987 to 1996 he was secretary of the Apostolic East region.
Within the Bishops' Conference of France, he was a member of the Commission of ordained ministries. He is currently bishop accompanying the national service of vocations and a member of the Council for the Pastoral Care of children and young people, responsibility for Catholic Education. in 2011 he ordained Jean Pateau abbot of Fontgombault Abbey.
- Fiche sur le site de l'épiscopat français. Archived 2008-03-05 at the Wayback Machine
- Fiche sur catholic-hierarchy.org
- Communiqué de presse de sa nomination Archived 2016-03-03 at the Wayback Machine sur le site de la conférence épiscopale française.
- Église catholique en Berry: Diocèse de Bourges, Mgr Maillard, retrieved: 2017-05-15.
- Vet, Cyprien (July 24, 2019). "Religious Sisters with Down syndrome: the joy of shared contemplative life". Vatican News. Retrieved July 31, 2019.