Durand a French Benedictine, was born about 1012 at Neubourg, in the diocese of Evreux. He was the nephew of Gerard, abbot of St. Vandrille, and while young adopted the rule of St. Bernard at Roueu, where he studied philosophy, music, and theology, so that he became well known among the prelates of Normandy for his learning. William the Bastard sent him to take charge of the abbey of St. Martin of Troarn, in 1059, where he distinguished himself for the maintenance of ecclesiastical discipline. He had a very fine and strong voice, and composed many chants and anthems. Durand died about 1089, in his own abbey, leaving only a dogmatic treatise entitled Du Corps et du Sang de Jesus Christ (preceded by about nine hundred hexameter verses, and printed in the Bibliotheca Maxima Patium, 18), besides two brief epitaphs. See Hoefer, Nouv. Biog. Generale, s.v.