The whole nobility of the North were now enlisted in the "Pilgrimage of Grace," as the rising called itself, and thirty thousand "tall men and well horsed" moved on the Don demanding the reversal of the royal policy, a reunion with Rome, the restoration of Catherine's daughter, Mary, to her rights as heiress of the crown, redress for the wrongs done to the Church, and above all the driving away of base-born councillors, or, in other words, the fall of Cromwell. Though their advance was checked by negotiation, the organization of the revolt went steadily on throughout the winter, and a parliament of the North, which gathered at Pomfret, formally adopted the demands of the insurgents. Only six thousand men under Norfolk barred their way southward, and the Midland counties were known to be disaffected. But Cromwell remained undaunted by the peril. He suffered, indeed, Norfolk to negotiate; and allowed Henry under pressure from his council to promise pardon and a free parliament at York, a pledge which Norfolk and Dacre alike construed into an acceptance of the demands made by the insurgents. Their leaders at once flung aside the badge of the "Five Wounds" which they had worn, with a cry, "We will wear no badge but that of our lord the King," and nobles and farmers dispersed to their homes in triumph. But the towns of the North were no sooner garrisoned and Norfolk's army in the heart of Yorkshire than the veil was flung aside. A few isolated outbreaks in the spring of 1537 gave a pretext for the withdrawal of every concession. The arrest of the leaders of the Pilgrimage of Grace was followed by ruthless severities. The country was covered with gibbets. Whole districts were given up to military execution. But it was on the leaders of the rising that Cromwell's hand fell heaviest. He seized his opportunity for dealing at the northern nobles a fatal blow. "Cromwell," one of the chief among them broke fiercely out as he stood at the council board, "it is thou that art the very special and chief cause of all this rebellion and wickedness, and dost daily travail to bring us to our ends and strike off our heads. I trust that ere thou die, though thou wouldst procure all the noblest heads within the realm to be stricken off, yet there shall one head remain that shall strike off thy head." But the warning was unheeded. Lord Darcy, who stood first among the nobles of Yorkshire, and Lord Hussey, who stood first among the nobles of Lincolnshire, went alike to the block. The Abbot of Barlings, who had ridden into Lincoln with his canons in full armor, swung with his brother-abbots of Whalley, Woburn, and Sawley from the gallows. The abbots of Fountains and of Jervaulx were hanged at Tyburn side by side with the representative of the great line of Percy. Lady Bulmer was burned at the stake. Sir Robert Constable was hanged in chains before the gate of Hull.