But he had sworn to observe the Provisions, and the fidelity to his pledge which remained throughout his life the chief note of his temper at once showed itself.
Like Simon he protested against the faithlessness of the barons in the carrying out of their reforms, and it was his strenuous support of the petition of the knighthood that brought about the additional Provisions of 1259.

He had been brought up with Earl Simon's sons, and with the Earl himself his relations remained friendly even at the later time of their fatal hostilities.

But as yet he seems to have had no distrust of Simon's purposes or policy.

His adhesion to the Earl recalled Henry from France; and the king was at once joined by Gloucester in London while Edward and Simon remained without the walls.

But the love of father and son proved too strong to bear political severance, and Edward's reconciliation foiled the Earl's plans.