From this wretched fate young Robert alone was exempted, but Louis thought that his promise not to cast him into prison was sufficiently respected by giving him into the custody of a citizen of Bruges. Of Robert's entire innocence there can be no doubt. Even Walbert, the enemy of his race, bears testimony to his noble qualities. He was most popular, not only in Bruges, but throughout Flanders. Again and again the burghers had petitioned Louis in his favour. Even some of the Isegrin leaders had followed their example, but for all of them the French king had one answer. He had sworn to take no step without the consent of his Council, and Robert remained in custody. As to the other prisoners, their captivity lasted only a fortnight. It was then (4th May) determined that they should be thrown from the tower which they had so bravely defended, and the same day the sentence was carried out. The soldiers entrusted with this odious task had received strict orders to complete it with as little noise as possible, and with brutal levity they told their victims that the King was about to give them proof of his mercy. The prisoners were then led one by one to the scene of execution, not by way of the _Place du Bourg_, which then, as now, was open to the public, but secretly through the Loove and across the covered bridge uniting it to the cathedral. On more than one occasion the townsfolk had shown marked sympathy for the Erembalds, and Louis feared that if his project was generally known, or if the victims were afforded an opportunity of appealing to them, an attempt at rescue might be made, which would perhaps end in revolution. The first to suffer was Wulfric Cnopp, the brother of Bertulph and Hacket. Until a few moments before his death he was ignorant of the fate in store for him. He had just time to take one last look at his beloved city, and then with a mighty effort, for Wulfric was a man of gigantic stature, the executioners threw him over the ramparts. There is reason to believe that this man was really guilty of the crime imputed to him. Then came young Walter, the son of the Châtelain of Ardenburg, a noble and a comely youth. 'For the love of God,' he cried, when he reached the summit of the tower and the executioners were about to complete their task, 'for the love of God let me say a prayer first.' They granted him a moment's respite, and then like a flash of lightning he fell down headlong and dashed all the life out of his beautiful body.