Arnaud (or Ernaud)

was abbot of Bonneval, in the diocese of Chartres, about 1144. He was twice driven by the persecutions which he endured in that office: to Rome, where popes Lucius II and Adrian IV received him honorably. From the latter he begged permission. to resign and retire into .his first monastery of Marmoutier, which he did, and died there. He was the friend of St. Bernard, and, at the request of the monks of Clairvaux, continued the History of the Life of St. Bernard, which had been commenced by William de St. Thierry. Another work of Arnaud's, entitled Tractatus de Cardinalibus Christi. Operibus (Paris, 1500, 1726; Oxford ed. of Cyprian, 1682), has sometimes been erroneously printed among-.the works of St. Cyprian. It is proved not to be the work of the latter-(1) because in a MS. of it in the library at Clairvaux it is plainly attributed to .Arfiand; (2) because the work itself declares the validity of baptism, by whomsoever administered, which is contrary to the well-known opinion of Cyprian; and it also alludes to many ecclesiastical rites which are subsequent to the time of Cyprian. Arnaud also wrote, Tractatus de VII Verbis Domini in Cruce

Prolatis (Antwerp, 1532):Sermo de Laudibus S. Marice Virginis (in Bibl. Patr. 22:1280):-Tractatus de Operibus VI Dierum (Auxerre, 1609): - Meditationes Varice; all the above are contained in the Oxford edition of Cyprian in 1682, at the end :-Commenturious in Psalm CXXXII, et Opusculum de VII Donis S. Spiritus, discovered by Mabillon at Citeaux (published by Cassimir Oudin, Leyden, 1692). See Cave, Historia Literaria, ii, 236.