Jean III de Saint-Avit

Jean de Saint-Avit was the thirty-sixth regular abbot of Notre-Dame de Mouzon, a Benedictine born at Châteaudun. Already head of the Meuse-side abbey in 1361, he swore fealty to the church of Reims, and in 1364 he confirmed Thomas de Châlons in the priory of Thin.

In 1374 he settled a sharp dispute with his monks over the monastic pittance. In January 1378 he was transferred to Saint-Médard de Soissons, resigning Mouzon to Avignon pope Clement VII, and on 7 October 1391 he was appointed bishop of Avranches.

He was one of the few bishops to speak in Joan of Arc's defence at her trial at Rouen in 1431, and he died there on 22 July 1442.