Westminster, 6th January, 1238, Edmund, Archbishop of Canterbury, remonstrated strongly against the marriage. It is said that when the prelate left England, he stood on a hill which commanded a view of London, and, extending his hands towards the city, pronounced a parting blessing on his country, and a curse on the countess and the offspring of her unholy union.

Events so came about that the courtier and alien became the representative leader of Englishmen, with the famous war-cry of "England for the English." The battle of Lewes placed everything in the power of Simon de Montfort, but in his prosperity many of his followers fell away from him. The last scene of the great man's life is truly pathetic. He lay at Evesham awaiting the troops which his son was to bring from Kenilworth. He did not know, however, that the garrison of that town had been surprised by Prince Edward, who had escaped from confinement. The army that marched upon Evesham bore the banners of Simon's son, but they were flying in the van of an enemy. Simon's first words, when he saw the force approach, were those of soldierly pride: "By the arm of St. James they come on well; they learnt that order from me." Before he spoke again, however, he had realized his position, and he cried out: "May God have mercy on our souls, for our bodies are Prince Edward's." When he died liberty seemed to have been crushed out of existence, but it was not so, for his spirit lived though his body died, and the real victory was with him.

The fate of Simon de Montfort was a subject of general lamentation, but none of the songs upon it that have come down to us are in English. In an Anglo-Norman lament he is likened to Thomas of Canterbury, and described as "a precious flower." Priest and layman united in his praise, and he was revered as a saint and martyr. Prayers were said in his honour, and a hymn was sung at his shrine, beginning: