Thomas à Becket, Archbishop of Canterbury, was a favourite of the citizens, though hated by his sovereign. Gilbert à Becket, his father, had a shop in Cheapside on the site of Mercers' Hall, whither the fair Saracen is said to have followed him from the Holy Land, where he had gone on a Crusade. He built a chapel in the churchyard of St. Paul, and his son, the famous archbishop, was well known to the citizens. Gilbert Foliot, Bishop of London, however, had taken the side of the king, Henry II., in the fatal quarrel, and aroused the anger of the prelate. A curious scene took place in consequence in old St. Paul's. A priest was celebrating mass, when a man approached, thrust a paper into his hand, and cried aloud, "Know all men that Gilbert, Bishop of London, is excommunicated by Thomas, Archbishop of Canterbury." The news spread fast among the citizens. Foliot at first attempted to defy the dread sentence; but he knew something of the nature of the citizens of London, and wisely bowed before the decree, which the people were quite willing to enforce.

St. Paul's was the scene of a memorable council in the reign of Richard Cœur de Lion, who was crusading in Palestine. The bishops, together with the king's brother John, met in the nave and condemned Longchamp to resign the office of justiciary, and to surrender the castles which he held in the name of the king. During this reign a factious demagogue, William Fitz-Osbert, equally distinguished by the length of his beard and the vehemence of his eloquence, called the people together at Paul's Cross, and excited them to rebel against their oppressors. Bishop Hubert, however, calmed the multitude on the eve of a formidable rising. The people deserted their leader, who took refuge in St. Mary-le-Bow Church, which was set on fire, and Fitz-Osbert suffered death at the hands of the hangman. Thus from the tyranny of a Royal favourite, and from that of a mob orator, the people were saved by the influence of the Church in St. Paul's Cathedral.

A still greater service did St. Paul's render to England. Here was assembled a grand concourse of bishops, abbots, deans, priors and barons, to withstand the oppressive lawlessness of King John. Here Magna Charta was first devised. Here, at the instigation of Archbishop Langton, the barons and chief men swore to maintain the principles of the Charta, and to protect the liberties of Englishmen.

St. Paul's also set itself in opposition to the authority of the Pope; and when a Papal legate sought to enthrone himself in St. Paul's, he was openly resisted by Cantelupe, Bishop of Worcester. Boniface of Savoy, "the handsome Archbishop," brought with him fashions strange enough to English folk. His armed retainers pillaged the markets, and he felled to the ground, with his own fist, the prior of St. Bartholomew, Smithfield, who presumed to oppose his visitation. He came to St. Paul's to demand first-fruits from the Bishop of London, but deemed it advisable to wear armour beneath his robes. He found the gates of the Cathedral closed against him; but he fared better than two canons of the Papal party, who were killed by the citizens a few years later when they attempted to enter St. Paul's. London was aroused by these Italian priests, and the citizens at length besieged Lambeth Palace and drove the obnoxious archbishop beyond seas.

Again and again the tocsin sounded, as St. Paul's bell rang clear and loud, and the citizens seized their weapons and formed their battalions beneath the shadow of the great church. Now it was to help Simon de Montfort against the king; now to seize the person of the obnoxious Queen Eleanor, who was trying to escape by water from the Tower to Windsor, and who was rescued from their hands by the Bishop of London, and found refuge in his palace. Now the favourites of Edward II. excited their rage, especially the Bishop of Exeter, the king's regent, who dared to ask the Lord Mayor for the keys of the city, and paid for his temerity with his life.

An incident which shows the attachment of the people to their church and bishop occurred in the reign of the third Edward. Wycliffe was summoned by Bishop Courtenay to appear before a great council at St. Paul's. But the reformer did not come alone; to the surprise of his accusers he arrived attended by a large following of friends, among whom were John of Gaunt and Lord Percy. These powerful supporters of Wycliffe attacked the bishop with angry words.

News was flashed among the citizens that John of Gaunt had threatened their bishop and vowed to drag him out of the church by the hair. They gathered together in angry crowds, and would have slain the duke and sacked his palace, the Savoy, in the Strand, if the bishop had not interfered on behalf of his enemy. Wycliffe and Lollardism did not then find much favour with the people of London.

There were reformers within the Church who were quite as eager to correct abuses as those outside the fold. Among these was Bishop Braybroke of London, who lived in the time of Edward IV. He contended for the sanctity of the sacred building, inveighed against the practice of using it as an exchange, of playing at ball within the precincts or within the church, and of shooting the pigeons which then as now found sanctuary at St. Paul's.

The chronicles of the Cathedral tell the story of the troublous times of the Wars of the Roses. We see Henry IV. pretending bitter sorrow for the death of the murdered Richard, and covering with cloths of gold the body, which had been exhibited to the people in St. Paul's. We see Henry V. returning in triumph from the French wars, riding in state to the Cathedral, attended by "the mayor and brethren of the city companies, wearing red gowns with hoods of red and white, well-mounted and gorgeously horsed, with rich collars and great chains, rejoicing at his victorious returne." Then came Henry VI., attended by the bishops, the dean and canons, to make his offering at the altar. Here the false Duke of York took his oath on the Blessed Sacrament to be loyal to the king. Here the rival houses swore to lay aside their differences, and to live at peace. But a few years later saw the new king, Edward IV., at St. Paul's, attended by great Warwick, the king-maker, with his bodyguard of 800 men-at-arms. Strange were the changes of fortune in those days. Soon St. Paul's saw the exhibition of the dead body of the king-maker, and not long afterwards that of the poor dethroned Henry, and Richard came in state here amid the shouts of the populace. After the defeat of the conspiracy of Lambert Simnel, Henry VII. celebrated a joyous thanksgiving in the Cathedral, and here, amid much rejoicing, the youthful marriage of Prince Arthur with Catherine of Arragon took place, when the conduits at Cheapside and on the west of the Cathedral ran with wine, and the bells rang joyfully, and all wished happiness to the Royal children whose wedded life was destined to be so brief.

The Reformation and After