The prelate who built Soissons Cathedral was a remarkable personage and played a foremost part on the Fourth Crusade. Villehardouin tells us that it was Bishop Nivelon de Chérisy who was sent as an envoy to Innocent III, when against papal commands the Crusaders had turned aside to capture the Christian city of Zara on the Dalmatian coast. The bishop-ambassador found the pope at Viterbo and obtained from him the raising of the excommunication on condition that the knights should proceed direct to Palestine. We all know how, a second time, they went filibustering. Among the first to scale the walls of Constantinople was Nivelon de Chérisy; with him was the bishop of Troyes. When the chief barons met to elect the first Latin emperor of Constantinople, it was Bishop Nivelon who passed out to the waiting crowd to announce that Baldwin of Flanders had been chosen--Baldwin who began the Cloth Hall at Ypres--and it was he who crowned Baldwin in St. Sophia. When that new emperor was captured by the Bulgars the bishop of Soissons returned to Europe for aid. All the time that he was absent in the Holy Land Nivelon had devoted the revenues of his see toward the renewal of the cathedral. Strangely enough, it was this same prelate who also built Soissons' choir, which in scale and plan differs so radically from the transept arm. The fleeting hour of Primary Gothic was over. The new art was moving forward swiftly; irresistible the development of its principles and impossible at such a time that the work of one decade could be similar to the decade preceding it unless, as at Laon, the primitive plan was insistently adhered to. Whoever the master that designed Soissons' choir and nave, he incorporated the perfect transept into his bigger church with reverence. Not to dwarf it was his main care, for he bowed before the touch of perfection in his predecessor's work, and sought to give to his own monument, different though it was, a like clarity and noble simplicity. Examine the skill with which choir and nave are joined to the small transept arm. It is lower than they, it has four vertical stories to their three, and yet no discrepancy is felt. It was as if the new builder said: "Here is a miracle of force and grace, done in a fugitive hour never to be recaptured. Let us enshrine it fittingly." In 1212 services were held in the finished choir. The nave proceeded without interruption and was in use in the first years of St. Louis' reign. Probably the final touches were given to it by that bishop of Soissons of whom Joinville tells, Mgr. Jacques de Castel, _fort et vaillant homme_, who started with the king on the crusade of 1248. After Mansourah's battle and the disastrous retreat toward Damietta good Bishop Jacques felt such a desire "to go to God" that he rushed alone to attack the infidels, whose swords soon "dispatched him to God's company with the martyrs."