12. Early Parliaments.—The means by which the transformation was accomplished consisted in the first instance, as has been said, in the introduction into the Council of new and representative elements. The earliest step in this direction was taken in 1213, when King John, harassed by fiscal and political difficulties, addressed to the sheriffs a series of writs commanding that four discreet knights from every county be sent to participate in a deliberative council to be held at Oxford. The practice took root slowly. In 1254 Henry III., in sore need of money for the prosecution of his wars in Gascony, required of the sheriffs that two knights be sent from each county to confer with the barons and clergy relative to the subsidies which should be accorded the crown. The desired vote of supplies was refused and the long-brewing contest between the king and the barons broke in civil war. But during the struggle that ensued the foundations of Parliament were still more securely laid. Following the king's defeat at Lewes, in 1264, Simon de Montfort, leader of the barons, convened a parliament composed of not only barons and clergy but also four knights from each shire, and at London during the following year, he caused again to be assembled, in addition to five earls, eighteen barons, and a large body of clergy, two knights from each of the several shires and two burgesses from each of twenty-one towns known to be friendly to the barons' cause. These proceedings were essentially revolutionary and unauthorized. Even the gathering of 1265, as Stubbs remarks, presented the appearance largely of a party convention, and there is no evidence that its author intended such a body to be regularly or frequently summoned, or even summoned a second time at all. None the less, now for the first time representatives of the towns were brought into political co-operation with the barons, clergy, and knights; and the circumstance was filled with promise. During the ensuing thirty years there were several "parliaments," although the extent to which knights and burgesses participated in them is uncertain. The period was one of experimentation. In 1273 four knights from each shire and four citizens from each town joined the magnates in taking the oath of fealty to the new and absent sovereign, Edward I. The First Statute of Westminster, in 1275, declares itself to have been adopted with the assent of the "commonalty of the realm." In 1283 a parliament was held which almost precisely duplicated that of 1265. In 1290, and again in 1294, there was one, in which, however, representation of the towns was omitted.
The gathering which served to fix the type for all time to come was Edward I.'s so-called Model Parliament of 1295. To this parliament the king summoned severally the two archbishops, all of the bishops, the greater abbots, and the more important earls and barons; while every sheriff was enjoined to see that two knights were chosen from each shire, two citizens from each city, and two burgesses from each borough. Each bishop was authorized, furthermore, to bring with him his prior or the dean of the cathedral chapter, the archdeacons of his diocese, one proctor or agent for his cathedral chapter, and two of his diocesan clergy. In the parliament as actually convened there were 2 archbishops, 18 bishops with their lesser clergy, 66 abbots, 3 heads of religious orders, 9 earls, 41 barons, 63 knights of the shire, and 172 representatives of the cities and boroughs—an aggregate of approximately 400 persons. There were thus present in the assemblage, in person or by deputy, all of the constituent orders of English society, and the irregular device of Simon de Montfort was vested at last with the character of legality. After Edward I. Parliament may be said to have been an established institution of the realm. Its meetings long continued intermittent and infrequent, and its powers from time to time varied enormously, but the place which it filled in the economy of the nation grew ever more important.
13. Establishment of the Bicameral System.—Like its counterpart in France, the Estates-General, the English Parliament comprised the three great estates or orders—nobility, clergy, and commons—of which, aside from the peasantry, mediæval society in all western European countries was composed. In the working out of its internal structure, however, two chambers resulted, rather than, as in France, three. Originally the three estates sat separately. Their primary business was the voting of supplies and, the principle being that a tax ought to be conceded by those who would be called upon to pay it, the natural course was for the lords to grant their scutages and aids, the commoners their tenths and fifteenths, and the clergy their subsidies, apart. Indeed there is reason to believe that at times even the knights and the burgesses deliberated separately. Gradually, however, there appeared certain affiliations of interest which operated to modify the original practice. In the first place, the lesser clergy, inconvenienced by attendance and preferring to vote their contributions in the special ecclesiastical assemblages known as the convocations of Canterbury and York, contrived to throw off entirely their obligation of membership. The greater clergy and the greater barons, in the next place, developed sufficiently large interests in common to be amalgamated with ease in one body. Similarly, the lesser barons found their interests essentially identical with those of the country freeholders, represented by the knights of the shire, and with those of the burgesses. The upshot was a gradual alignment of the aggregate membership in two great groups, the one of which became historically the House of Lords, the other the House of Commons. At the beginning of the reign of Edward III. (1327–1377) the three estates still sat separately, but before the close of this period the bicameral arrangement seems definitely to have been established. There is no evidence that at any stage of their history the three groups ever sat as a single body. It need hardly be emphasized that the entire course of English history since the fourteenth century has been affected profoundly by the fact that the national assembly took the form of two houses rather than of one, as did the Scotch, of three as did the French, or of four as did the Swedish. But for the withdrawal of the lesser clergy, the number might very possibly have been three.
14. Powers of Finance and Legislation.—Structurally, the English Parliament is a creation of the Middle Ages; politically, it is a product of modern times, and, in no small measure, of the past hundred years. Before the close of the Middle Ages, however, it had acquired a sum total of authority which at least gave promise of its development into a great co-ordinate, if not a preponderating, power in the state. In the first place, it had forced the establishment of the twin principles of public finance (1) that the right to levy taxes of every sort lay within its hands and (2) that the crown might impose no direct tax without its assent, nor any indirect tax save such as might be justified under the customs recognized in Magna Carta. When Edward I. confirmed the Charter, in 1297, he agreed that no tallages or aids should thereafter be taken without the assent of the archbishops, bishops, earls, barons, knights, burgesses, and other freemen of the land. A statute of 1340 reiterated the principle still more specifically. In 1395 appeared the formula employed to this day in the making of parliamentary grants, "by the Commons with the advice and assent of the Lords Spiritual and Temporal." And in 1407 Henry IV. extended the royal approval to the principle that money grants should be initiated in the Commons, assented to by the Lords, and only thereafter reported to the king. For the ancient theory of taxation by estates was substituted, slowly but inevitably, the modern doctrine of the fiscal pre-eminence of the Commons.
The second point at which Parliament made decisive advance before the close of the mediæval period was in respect to powers of ordinary legislation. Originally, Parliament was not conceived of as, in the strict sense, a law-making body at all. The magnates who composed the General Council had exercised the right to advise the crown in legislative matters, and their successors in Parliament continued to do the same, but the commoners who in the thirteenth century were brought in were present, in theory, for fiscal rather than legislative purposes. The distinction, however, was difficult to maintain, and with the continued growth of the parliamentary body the legislative character was recognized eventually to be inherent in the whole of it. At the opening of the fourteenth century