Meanwhile, in 1194 Raymond V had been succeeded by his son, Raymond VI, who, if he was not actually a heretic, was at least indifferent to the interests of the Catholic faith. Most of his barons favoured Catharism. He himself was surrounded by a gay and cultured court, and was popular with his subjects. At the same time the local clergy neglected their duties, the barons plundered the Church, and the heretics, without persecuting the Catholics, were gradually extinguishing them in the dominions of Toulouse. Immediately on his accession in 1198 Innocent III appointed commissioners to visit the heretical district; but the local bishop, from jealousy, would not help. Some effect, however, was produced when, acting on the suggestion of a Spanish prelate, Diego de Azevedo, Bishop of Osma, they dismissed their retinues and started on a preaching tour among the people. The Bishop was accompanied by the Canon Dominic, and this mission was the germ out of which shortly grew the great Dominican Order. But the Bishop went back to Spain, and twice the papal legate excommunicated Raymond VI because he would give no help. Once Raymond made his peace with the Church, but the second pronouncement against him was shortly followed by the murder of the legate Peter of Castelnau, who had made himself peculiarly obnoxious (1208). Raymond's complicity was never proved, but Innocent was getting impatient, and his commissioners had made up their minds that it was easier and quicker to exterminate the heretics than to convert them. Raymond and all concerned in the murder were excommunicated, and a crusade was proclaimed against them. Philip Augustus of France allowed his barons to go, but excused himself on the ground of his relations with John of England. Raymond hoped to avoid the threatening storm by another abject submission; but he was obliged to surrender his chief fortresses and to join in person the army which now assembled for the extirpation of heresy in his own lands. [Sidenote: The Crusade.] Although Raymond was thus forced to appear in the ranks of his enemies, a leader in resistance was found in his nephew, Raymond Roger, Viscount of Béziers (1209). But his capital Béziers was stormed by the crusading army under the legate, who, when asked how the soldiers could distinguish Catholics from heretics, is said to have replied, "Slay them all: God will know His own." Then Carcassonne, deemed impregnable, was besieged, and the young Viscount, decoyed into the enemies' camp under pretence of negotiation, was kept a prisoner. He died, and the city was surrendered. The conquered territory was practically forced by the legate on Simon de Montfort, younger son of the Count of Evreux, who, through his mother, was also Earl of Leicester. [Sidenote: Simon de Montfort.]