The unity of the national government being recognised, it was another sign of the times that its control should be transferred from the monarch to a committee of barons. At this point the rigid conceptions of the triumphant oligarchy stood in the way of a wide national policy. Since the reign of John the custom had arisen of consulting the representatives of the shire-courts on matters of politics and finance. In 1258 there is not the least trace of a suggestion that parliament could ever include a more popular element than the barons and prelates. On the contrary, the Provisions diminished the need even for those periodical assemblies of the magnates which had been in existence since the earliest dawn of our history. For all practical purposes small baronial committees were to perform the work of magnates and people as well as of the crown. Yet it must be recognised that the barons showed self-control, as well as practical wisdom, in handing over functions discharged by the baronage as a whole to the various committees of their selection. The danger of general control by the magnates was that a large assembly, more skilled in opposition than in constructive work, was almost sure to become infected by faction. By strictly limiting and defining who the new rulers of England were to be, the barons approached a combination of aristocratic control with the stability and continuity resulting from limited numbers and defined functions. It is likely, however, that in bestowing such extensive powers on their nominees, they were influenced by the well-grounded belief that the new constitution could only be established by main force, and that, even when abandoned by the king, the aliens would make a good fight before they gave up all that they had so long held in England. The success of the new scheme largely depended upon the immediate execution of the ordinance for the expulsion of the foreigners.

The first step taken to carry out the Provisions was the appointment of the new ministers. The barons insisted on the revival of the office of justiciar, and a strenuous and capable chief minister was found in Hugh Bigod. It was advisable to go cautiously, and some of the king's ministers were allowed to continue in office. An appeal to force was necessary before the new constitution could be set up in detail. The Savoyards bought their safety by accepting it; but the Poitevins, seeing that flight or resistance were the only alternatives before them, were spirited enough to prefer the bolder course. They were specially dangerous because Edward and his cousin, Henry of Almaine, the son of the King of the Romans, were much under their influence. In the Dominican convent at Oxford the baronial leaders formed a sworn confederacy not to desist from their purpose until the foreigners had been expelled. There were more hot words between Leicester and William, the most capable of the Lusignans. The Poitevins soon found that they could not maintain themselves in the face of the general hatred. On June 22 they fled from Oxford in the company of their ally, Earl Warenne. They rode straight for the coast, but failing to reach it, occupied Winchester, where they sought to maintain themselves in Aymer's castle of Wolvesey. The magnates of the parliament then turned against them the arms they professed to have prepared against the Welsh. Headed by the new justiciar, Hugh Bigod, they besieged Wolvesey. Warenne abandoned the aliens, and they gladly accepted the terms offered to them by their foes. They were allowed to retain their lands and some of their ready money, on condition of withdrawing from the realm and surrendering their castles. By the middle of July they had crossed over to France. With them disappeared the whole of the organised opposition to the new government. Edward, deprived of their support, swore to observe the Provisions.

Immediately on the flight of the Lusignans the council of Fifteen was chosen after a fashion which seemed to give the king's friends an equal voice with the champions of the aristocracy. Four electors appointed it, and of these two were the nominees of the baronial section, and two of the royalist section of the original twenty-four. The result of their work showed that there was only one party left after the Wolvesey fiasco. While only three of the king's twelve had places on the permanent council, no less that nine of the fifteen were chosen from the baronial twelve. It was useless for Archbishop Boniface, John Mansel, and the Earl of Warwick to stand up against the Bishop of Worcester, the Earls of Leicester, Norfolk, Hereford, and Gloucester, against John FitzGeoffrey, Peter Montfort, Richard Grey, and Roger Mortimer. Moreover, of the three, John Mansel alone could still be regarded as a royalist partisan. There were three of the fifteen chosen from outside the twenty-four. Of these, Peter of Savoy, Earl of Richmond, might, like his brother Boniface, be regarded as an alien, though hatred of the Poitevins had by this time made Englishmen of the Savoyards. The other two, the marcher-lord James of Audley and William of Fors, Earl of Albemarle, were of baronial sympathies. It was the same with the other councils.

Inquiry was made as to abuses. Gradually the royal officials were replaced by men of popular leanings. The sheriffs were changed and were strictly controlled, and four knights from each shire assembled in October to present to the king the grievances of the people against the out-going sheriffs. The custody of the castles was put into trusty and, for the most part, into English hands. Finally the king was forced to issue a proclamation, in which he commanded all true men "steadfastly to hold and to defend the statutes that be made or are to be made by our counsellors". This document was issued in English as well as in French and Latin. A copy of the English version was sent to every sheriff, with instructions to read it several times a year in the county court, so that a knowledge of its contents might be attained by every man. It is perhaps the first important proclamation issued in English since the coming of the Normans. Early in 1259 Richard, King of the Romans, set out to revisit England. He was met at Saint Omer by a deputation of magnates, who told him that he could only be allowed to land after taking an oath to observe the Provisions. Richard blustered, but soon gave in his submission. His adhesion to the reforms marks the last step in the revolution.

The new constitution worked without interruption until the end of 1259. Throughout that period domestic affairs were uneventful, and the efforts of the ministry were chiefly concerned in securing peace abroad. In 1258 Wales had been in revolt, Scotland unfriendly, and France threatening. A truce, ill observed, was made with Llewelyn, who found it worth while to be cautious, seeing that his natural enemies, but sometime associates, the marchers, had a preponderant share in the government. The Scots were easier to satisfy, for there was at the time no real hostility between either kings or peoples. The chief event of this period is the conclusion of the first peace with France since the wars of John and Philip Augustus. The protracted negotiations which preceded it took the king and his chief councillors abroad, and that made it easier to carry on the new domestic system without friction.

Since the friendly personal intercourse held between Henry and Louis IX. in 1254, the relations between England and France had become less cordial. The revival of the English power in Gascony, the Anglo-Castilian alliance, and the election of Richard of Cornwall to the German kingship irritated the French, to whom the persistent English claim to Normandy and Anjou, and the repudiation of the Aquitanian homage, were perpetual sources of annoyance. The French championship of Alfonso against Richard achieved the double end of checking English pretensions, and cooling the friendship between England and Castile. St. Louis, however, was always ready to treat for peace, while the revolution of 1258 made all parties in England anxious to put a speedy end to the unsettled relations between the two realms. Negotiations were begun as early as 1257, and made some progress; but the decisive step was taken immediately after the prorogation of the reforming parliament in the spring of 1258. During May a strangely constituted embassy treated for peace at Paris, where Montfort and Hugh Bigod worked side by side with two of the Lusignans and Peter of Savoy. They concluded a provisional treaty in time for the negotiators to take their part in the Mad Parliament. The unsettled state of affairs in England, however, delayed the ratification of the treaty. Arrangements had been made for its publication at Cambrai, but the fifteen dared not allow Henry to escape from their tutelage, and Louis refused to treat save with the king himself. There were difficulties as to the relation of the pope and the King of the Romans to the treaty, while Earl Simon's wife Eleanor and her children refused to waive their very remote claims to a share in the Norman and Angevin inheritances, which her brother was prepared to renounce. As ever, Montfort held to his personal rights with the utmost tenacity, and the self-seeking obstinacy of the chief negotiator of the treaty caused both bad blood and delay. At last he was bought off by the promise of a money payment, and the preliminary ratifications were exchanged in the summer of 1259. On November 14 Henry left England for Paris for the formal conclusion of the treaty. There were great festivities on the occasion of the meeting of the two kings, but once more Montfort and his wife blocked the way. Not until the very morning of the day fixed for the final ceremony were they satisfied by Henry's promise to deposit on their behalf a large sum in the hands of the French. Immediately afterwards Henry did homage to Louis for Gascony.

The chief condition of the treaty of Paris was Henry's definitive renunciation of all his claims on Normandy, Anjou, Maine, Touraine, and Poitou, and his agreement to hold Gascony as a fief of the French crown. In return for this, Louis not only recognised him as Duke of Aquitaine, but added to his actual possessions there by ceding to him all that he held, whether in fief or in demesne, in the three dioceses of Limoges, Cahors, and Périgueux. Besides these immediate cessions, the French king promised to hand over to Henry certain districts then held by his brother, Alfonse of Poitiers, and his brother's wife Joan of Toulouse, in the event of their dominions escheating to the crown by their death without heirs. These regions included Agen and the Agenais, Saintonge to the south of the Charente, and in addition the whole of Quercy, if it could be proved by inquest that it had been given by Richard I. to his sister Joan, grandmother of Joan of Poitiers, as her marriage portion. Moreover the French king promised to pay to Henry the sums necessary to maintain for two years five hundred knights to be employed "for the service of God, or the Church, or the kingdom of England."[1]

[1] For the treaty and its execution see M. Gavrilovitch, Étude sur le traité de Paris de 1259 (1899).

The treaty was unpopular both in France and England. The French strongly objected to the surrender of territory, and were but little convinced of the advantage gained by making the English king once more the vassal of France. English opinion was hostile to the abandonment of large pretensions in return for so small an equivalent. On the French side it is true that Louis sacrificed something to his sense of justice and love of peace. But the territory he ceded was less in reality than in appearance. The French king's demesnes in Quercy, Périgord, and Limousin were not large, and the transference of the homage of the chief vassals meant only a nominal change of overlordship, and was further limited by a provision that certain "privileged fiefs" were still to be retained under the direct suzerainty of the French crown. As to the eventual cessions, Alfonse and his wife were still alive and likely to live many years. Even the cession of Gascony was hampered by a stipulation that the towns should take an "oath of security," by which they pledged themselves to aid France against England in the event of the English king breaking the provisions of the treaty. Perhaps the most solid advantage Henry gained by the treaty was financial, for he spent the sums granted to enable him to redeem his crusading vow in preparing for war against his own subjects. It was, however, an immense advantage for England to be able during the critical years which followed to be free from French hostility. If, therefore, the French complaints against the treaty were exaggerated, the English dissatisfaction was unreasonable. The real difficulty for the future lay in the fact that the possession of Gascony by the king of a hostile nation was incompatible with the proper development of the French monarchy. For fifty years, however, a chronic state of war had not given Gascony to the French; and Louis IX. was, perhaps, politic as well as scrupulous in abandoning the way of force and beginning a new method of gradual absorption, that in the end gained the Gascon fief for France more effectively than any conquest. The treaty of Paris was not a final settlement. It left a score of questions still open, and the problems of its gradual execution involved the two courts in constant disputes down to the beginning of the Hundred Years' War. For seventy years the whole history of the relations between the two nations is but a commentary on the treaty of Paris.

During his visit to Paris Henry arranged a marriage between his daughter Beatrice and John of Brittany, the son of the reigning duke. In no hurry to get back to the tutelage of the fifteen, he prolonged his stay on the continent till the end of April, 1260. Yet, abroad as at home, he could not be said to act as a free man. It was not the king so much as Simon of Montfort who was the real author of the French treaty. Indeed, it is from the conclusion of the Peace of Paris that Simon's preponderance becomes evident. He was at all stages the chief negotiator of the peace and, save when his personal interests stood in the way, he controlled every step of the proceedings. If in 1258 he was but one of several leaders of the baronial party in England, he came back from France in 1260 assured of supremacy. During his absence abroad, events had taken place in England which called for his presence.