Mentioned in 1236 charter of Bishop Geoffroy d'Eu, Gallia Christiana X, col. 342, transcribed in item 12 below: "Nam si peccatis nostris exigentibus, permiserit Dominus nostram ecclesiam concremari...." Further defined in 1241 charter of Bishop Arnoul de la Pierre, which specifies that the fire took place in episcopate of Evrard, d. 1222, Cartulaire, I, No. 316, p. 362, transcribed in item 16 below: "quod cum ecclesiam Ambianensem, tempore pie recordationis Everardi episcopi Ambianensis, tunc eidem ecclesie presidentis, contigisset incendio corruisse." No medieval text specifies the date: "1218" was assigned by the seventeenth and eighteenth centuries, see, for example, Bibl. nat., Collection de Picardie, vol. II, J.-J. de Court, Mˇmoires cronologiques, II, 2, "cette catˇdrale fut br˛lˇe avec tous les titres de l'evechˇ et du chapitre en 1218: sous l'episcopat d'Everard. Ce fut cet incomparable Eveque qui avec le secours du chapitre, du clergˇ et du peuple, forma le vaste dessein de faire construire une autre eglise et une des plus magnifiques de l'univers, c'est elle qui cause encore aujourd'hui l'admiration de tous le monde...." See also L. Douchet (ed.), Manuscrits de Pag¸s, I, 39. What exactly burned in "1218?" Presumably the twelfth-century church that had been built after a fire had destroyed the earlier edifice in 1137 (Durand, Monographie, I, 10-12). This twelfth-century edifice was consecrated in 1152 by Samson, archbishop of Reims. We know nothing of its form, although it may be assumed that it was a church of considerable size.