Yet the most noteworthy in all respects of the dauntless zealots who fought the seemingly desperate battle against heresy was Piero da Verona, better known as St. Peter Martyr. Born at Verona in 1203 or 1206, of a heretic family, his legend relates that he was divinely led to recognize their errors. When a schoolboy of only seven years of age his uncle chanced to ask him what he learned, and he repeated the orthodox creed. His uncle thereupon told him he must not say that God created the heaven and the earth, for he was not the creator of the visible universe; but the child, filled with the Holy Ghost, overcame his elder in argument, who thereupon urged the parents to remove him from school, but the father, who hoped to see him become a leader of the sect, allowed him to complete his education. His orthodox zeal grew with his growth, and in 1221 he entered the Dominican Order. His confessor testified that he never committed a mortal sin, and the bull of his canonization bears emphatic evidence to his humility, his meek obedience, his sweet benignity, his exhaustless compassion, his unfailing patience, his wonderful charity, his passionate supplications to God for martyrdom, and the innumerable miracles which illustrated his life.[230]

Before the Dominicans were armed with the power of persecution Piero earnestly devoted himself to the original function of the Order, that of controverting heresy, and preaching against heretics. In this the success of the young apostle was marvellously aided by his thaumaturgic development. At Ravenna, Mantua, Venice, Milan, and other places, numerous wonders are related of his performance. Thus, at Cesena, the success of his efforts at conversion irritated the heretics, who, on one occasion, interrupted his preaching in the public square by volleys of filth and stones discharged from a house near by. He several times mildly entreated them to desist, but in vain, when, inspired by divine wrath, he launched a terrible imprecation against them. Instantly the house crumbled in ruin, burying the sacrilegious wretches, nor could it be rebuilt until long afterwards.[231]

When the Dominicans were charged with the duty of persecution his earnest zeal naturally caused him to be selected as one of the earliest laborers. In 1233 he was sent to Milan, where, thus far, all the efforts of papal missives and legates had proved ineffectual to rouse the authorities and the citizens to undertake the holy work. The laws which, in 1228, Cardinal Goffredo had inscribed on the statute-book had remained a dead letter. All this was changed when Piero da Verona made his influence felt. Not only did he cause Gregory’s legislation of 1231 to be adopted in the municipal law, but he stimulated the podestà, Oldrado da Tresseno, and the archbishop, Enrico da Settala, to work in earnest. A number of heretics were burned, who were probably the first victims of fanaticism which Milan had seen since the time of the Cathari of Monforte. So strong was the impression made by these executions that they earned for the podestà Oldrado the honor of an equestrian portrait in bas-relief, with the inscription, “Qui solium struxit, Catharos ut debuit uxit,” which is still to be seen adorning the wall of the Sala del Consiglio, now the Archivio pubblico. It fared worse with the archbishop, who was rendered so unpopular that he was banished, for which the magistracy was duly excommunicated; but he, too, had posthumous reward, for his tomb bore the legend “instituto inquisitore jugulavit hœreses.” Piero likewise founded in Milan a company, or association, for the suppression of heresy, which was taken under immediate papal protection—the model of that which ten years later did such bloody work in Florence. We may safely assume that his fiery activity continued unabated, though we hear nothing of him until 1242, when we again find him in Milan so vigorously at work that he is said to have caused a sedition which nearly ruined the city.[232]

Two years later we meet him fighting heresy in Florence. That city, it will be remembered, was the subject of the earliest inquisitorial experiments, Frà Giovanni di Salerno, Prior of Santa Maria Novella, having been commissioned to prosecute heretics in 1228, and being succeeded after his death, in 1230, by Frà Aldobrandini Cavalcante, and about 1241 by Frà Ruggieri Calcagni. The first two of these accomplished little, being, in fact, rather preachers than inquisitors. The heretics were protected by the Ghibelline faction and the partisans of Frederic II., and heresy, far from decreasing, spread rapidly in spite of occasional burnings. When the Catharan Bishop Paternon fled, his position was successively held by three others, Torsello, Brunnetto, and Giacopo da Montefiascone. Many of the most powerful families were heretics or open defenders of heresy—the Baroni, Pulci, Cipriani, Cavalcanti, Saraceni, and Malpresa. The Baroni built a stronghold at San Gaggio, beyond the walls, which served as a refuge for the Perfected, and there were plenty of houses in the town where they could hold their conventicles in safety. The Cipriani had two palaces, one at Mugnone and the other in Florence, where troops of Cathari assembled under the leadership of a heresiarch named Marchisiano, and there were great schools at Poggibonsi, Pian di Cascia, and Ponte a Sieve.[233]

The whole of central Italy, in fact, was almost as deeply infected with heresy as Lombardy, and little had as yet been done to purify it. That as late as 1235 no comprehensive attempt had been made to establish the Inquisition is shown by a papal brief addressed in that year to the Dominicans of Viterbo, empowering them, in all the dioceses of Tuscany, Viterbo, Orta, Balneoreggio, Castro, Soano, Amerino, and Narni, to absolve heretics not publicly defamed for heresy, who should spontaneously accuse themselves, provided the bishops assented and sufficient bail were given; and the bishops were ordered to co-operate. Heretics not thus voluntarily confessing were to be dealt with according to the papal statutes. At Viterbo dwelt Giovanni da Benevento, who was called the pope of the heretics, but it was not until Gregory went thither in 1237 and undertook the task of purifying the place himself that any efficient action was taken; he condemned Giovanni and many other heretics, and ordered the palaces of some of the noblest families of the city to be torn down, as having afforded refuge to heretics. At the same time the Bishop of Padua was urged to persevere in the good work, and at Parma the Knights of Jesus Christ were instituted with the same object by Jordan, the Dominican general. All this indicates the commencement of systematic operations, and the pressure grew stronger year by year. Under the energetic management of Ruggieri Calcagni the Florentine Inquisition rapidly took shape and executions became frequent, while in the confessions of the accused allusions are made to heretics burned elsewhere, showing that persecution was becoming active wherever political conditions rendered it possible. Thus in a confession of 1244 there is a reference to two, Maffeo and Martello, burned not long before at Pisa.[234]

In Florence Frà Ruggieri’s vigor was reducing the heretics to desperation. Each trial revealed fresh names, and as the circle spread the prosecutions became more numerous and terrible. The Signoria was coerced by papal letters to enforce the citations of the inquisitor, and as the prisoners multiplied and their depositions were taken, fully a third of the citizens, including many nobles, were found to be involved. Excited by the magnitude of the developments, Ruggieri determined to strike at the chiefs, and, invoking the aid of the Priors of the Arts, he seized a number of them and condemned to the stake those who proved contumacious. The time had evidently come when they must choose between open resistance and destruction. The Baroni assembled their followers, broke open the jails, and carried off the prisoners, who were distributed through various strongholds in the Florentine territory, where they continued to preach and spread their doctrines.

Matters were rapidly approaching a crisis. On the one hand it was impossible for so large a body as the heretics to permit themselves to be slaughtered in detail with impunity, to say nothing of the spoliation and gratification of private feuds which could not fail to involve the innocent with the guilty in a persecution of such extent so recklessly pursued. On the other hand, the persecutors were maddened with excitement and with the prospects of at last triumphing over the adversaries who had so long defied them. Innocent IV. wrote pressingly to the Signoria commanding energetic support for the inquisitor, and he summoned from Lombardy Piero da Verona to lend his aid in the approaching struggle. Towards the end of 1244 Piero hastened to the conflict, and his eloquence drew such crowds that the Piazza di Santa Maria Novella had to be enlarged to accommodate the multitude. He utilized the enthusiasm by enrolling the orthodox nobles in a guard to protect the Dominicans, and formed a military order under the name of the Società de’’ Capitani di Santa Maria, uniformed in a white doublet with a red cross, and these led the organization known as the Compagnia della Fede, sworn to defend the Inquisition at all hazards, under privileges granted by the Holy See. Thus encouraged and supported, Ruggieri pushed forward the trials, and numbers of victims were burned. This was a challenge which the heretics could only decline under pain of annihilation. They likewise organized under the lead of the Baroni, and it was not difficult to persuade the podestà, Ser Pace di Pesannola of Bergamo, recently appointed by Frederic II., that the interest of his master required him to protect them. Thus the perennial quarrel between the Church and the empire filled the streets of Florence with bloodshed under the banners of orthodoxy and heterodoxy.

Ruggieri provoked the conflict without flinching. He cited the Baroni before him, and when they contemptuously refused to appear he procured a special mandate from Innocent IV. This they obeyed with the utmost docility, about August 1, 1245, swearing to stand to the mandates of the Church, and depositing one thousand lire as security; but when they understood that he was about to render sentence against them, they appealed to the podestà. Ser Pace thereupon sent his officers, August 12, to Ruggieri, ordering him to annul the proceedings as contrary to the mandate of the emperor, to return the money taken as bail, and, in case of contumacy, to appear the next day before the podestà under penalty of a thousand marks. Ruggieri’s only notice of this was a summons the next day to Ser Pace to appear before the Inquisition as suspect of heresy and fautorship, under pain of forfeiture of office. The fervid rhetoric of Frà Piero poured oil upon the flames, and the city found itself divided into two factions, not unequally matched and eager to fly at each other. Taking advantage of the assembling of the faithful in the churches on a feast-day, the podestà sounded the tocsin, and many unarmed Catholics are said to have been slaughtered before the altars. Then on St. Bartholomew’s day (August 24) Ruggieri and Bishop Ardingho, in the Piazza di S. Maria Novella, publicly read a sentence condemning the Baroni, confiscating their possessions, and ordering their castles and palaces to be destroyed, which naturally led to a bloody collision between the factions. Piero then placed himself at the head of the Compagnia della Fede, carrying a standard like the other captains, among whom the de’’ Rossi were the most conspicuous. Under his leadership two murderous battles were fought, one at the Croce al Trebbio and the other in the Piazza di S. Felicità, in both of which the heretics were utterly routed. Monuments still mark the scene of these victories; and, until recent times, the banner which San Piero gave to the de’’ Rossi was still carried by the Compagnia di San Piero Martire on the celebration of his birthday, April 29, while the one which he bore himself is preserved among the relics of Santa Maria Novella and is publicly displayed on his feast-day.

Thus was destroyed in Florence the power of the heretics and of the Ghibellines. Ruggieri, for his steadfast courage, was rewarded, before the close of 1245, with the bishopric of Castro, and was succeeded as inquisitor by San Piero himself, whose indefatigable zeal allowed the heretics no rest. Many of them, recognizing the futility of further resistance, abandoned their errors; others fled, and when Piero left Florence he could boast that heresy was conquered and the Inquisition established on an impregnable basis; though Rainerio’s estimate of the Florentine Cathari, some years later, shows that it still had an ample harvest to reward its labors.[235]

While Ruggieri, in the summer of 1245, was precipitating the conflict in Florence, Innocent IV., in the Council of Lyons, was passing sentence of dethronement on Frederic II. and trying to find some aspirant hardy enough to accept the imperial crown. Frederic laughed the sentence to scorn and easily disposed of his would-be competitors, but he was obliged to struggle hard to maintain his Italian possessions, and his death, December 13, 1250, relieved the papacy from the most formidable antagonist which its ambitious designs had ever encountered. Skilled equally in the arts of war and peace, untiring in activity, dismayed by no reverses, intellectually far in advance of his age, and encumbered with few scruples, Frederic’s brilliant abilities and indomitable courage had been the one obstacle in the papal path towards domination over Italy and the foundation on that basis of a universal theocratic monarchy. His son, Conrad IV., a youth of twenty-one, was scarce to be dreaded in comparison, though Innocent cautiously waited for a while in Lyons before venturing into Italy. After reaching Genoa, June 8, 1251, he addressed to Piero da Verona and Viviano da Bergamo a brief which shows that the intervening six months had not sufficed to dull the sense of rejoicing at the death of his great opponent, and that no more time was to be lost in taking full advantage of the opportunity. A dithyrambic burst of exultation is followed by the declaration that thanks to God for this inestimable mercy are to be rendered not so much in words as in deeds, and of these the most acceptable is the purification of the faith. Frederic’s favor towards heretics had long impeded the operations of the Inquisition throughout Italy, and now that he is removed it is to be put into action everywhere with all possible vigor. Inquisitors are to be sent into all parts of Lombardy; Piero and Viviano are ordered to proceed forthwith to Cremona, armed with all necessary powers; rulers who do not zealously assist them will be coerced with the spiritual sword, and, if this proves insufficient, Christendom will be aroused to destroy them in a crusade. This bull was followed by a rapid succession of others addressed to the Dominican provincials and to potentates, ordering strenuous co-operation, and the inscription in all local statutes of the constitutions of the dead emperor and of the popes—bulls issued in such haste that, June 13, 1252, the pope was obliged to explain that the blunders and omissions arising from the hurried work of the scribes are not to invalidate them. The whole was crowned, May 15, 1252, by the issue of the bull Ad extirpanda, of which I have given an abstract in a former chapter. This sought to render the civil power completely subservient to the Inquisition, and prescribed the extirpation of heresy as the chief duty of the State.[236]