With the power of the people was associated as of old the predominance of papal influence in the city and the depression of the archiepiscopal See. St. Peter had now completely subjected St. Ambrose. The assumption of supremacy in temporal as well as spiritual matters on the part of the Popes, their constant interference by means of legates, the activity of their innumerable and ubiquitous agents, the friars, had indeed reduced the seat of Ariberto to comparative insignificance, while the decay of feudal power and the depression of the aristocracy had robbed it of its wealth. But even assisted by the Pope, and at the height of their strength and triumph, the popular forces were impotent to establish any enduring order in the city. The nobles were still too powerful to submit peaceably to political inferiority. Moreover, as the offices and honours once confined to them became open to all, the successful and wealthy plebeians tended to join the upper class, which began to lose distinction of race in that of wealth and ability. The aristocracy, thus continually replenished with new blood, received fresh vigour and life, and the old divisions gradually merged into two classes, the milites, who fought on horseback and in armour, and the plebs, or general mass of citizens, who, little trained and lightly armed, accompanied the horsemen into battle on foot. The struggle between these two radical orders transformed Milan’s short period of republican liberty into a scene of anarchy and civil warfare, leading to the inevitable end of faction and strife, the tyranny of an individual.

Already by the end of the twelfth century the struggle of the factions over the annual election of the Consuls occasioned so much tumult and bloodshed, that the citizens in despair agreed with one accord to submit themselves to the government of a Podestà chosen from outside. But this device for peace ended by aggravating the strife. The faction uppermost for the time appointed a fierce partisan from another city, perhaps the leader of an exiled faction, who embroiled Milan with his own Commune, and exalted his sympathisers within her walls at the expense of the other party. The general discontent and disorder was reflected in constant changes in the Constitution. In the absence of any stable principle of government the power tended to fall into the hands of individuals. This was the opportunity of the nobles, from whose order the leaders of men naturally sprang. Taking advantage of the forces ready to their hands, these put themselves at the head of aristocrats or plebs, without much regard for principle, and in so doing resumed their ancient pre-eminence in the community, and initiated the new Epoch of Great Men, which was to succeed the failing Epoch of the People.

This process, at work throughout Lombardy, is shown in the second half of the thirteenth century in Milan by the gradual narrowing of the general party issue into a struggle for predominance between two great Houses, who represent and sum up in their mutual quarrel the diverse aims of the factions, and divide the community into two sharply defined and bitterly hostile bands, which fall inevitably, though by no means very precisely, into the wide general division of Guelf and Ghibelline. These were the Houses of the Della Torre, or Torriani, and of the Visconti.

In the race for supremacy the first far outstripped the second. The Della Torre were country nobles, who had, however, long been subjects and citizens of Milan, and though living usually on their estates in the Valsassina, they often appeared in the city and took part in its government and politics. They are named among the Capitani—the great secular nobles of Milan—from early in the twelfth century. They had from the first aided and protected the cause of the people against their own order, and it was this sympathy which lifted them to greatness on the democratic wave of the thirteenth century.

The power of this House in Milan arose first out of the gratitude of the city for the compassionate succour which Pagano della Torre, head of the House in 1237, gave to the wounded and starving fugitives from the disastrous battle of Cortenuova, whom he sheltered and tended in the Valsassina, and afterwards helped to get back safely to Milan. The Commune rewarded him with offices and with gifts of houses, and from that time the Torriani became regular inhabitants of the city and the principal leaders of the people’s faction.

Pagano the Good himself died in 1241, but left a numerous kindred to inherit his popularity. In this year Frate Leone da Perego was elected Archbishop of Milan. The new Primate secretly aspired to raise his See to its old power and importance, and to shake off the tutelage of the Pope, and though but a year or two before he had fought loyally, as we have seen, beside the papal legate in the ranks marshalled against Frederick II., he now put himself at the head of the aristocratic party, and even invoked, it may be suspected, the aid of the powerful forces of heresy. But against the nobles was ranged Martino della Torre, nephew of Pagano, as leader of the people, who, in 1249, elected him their head with the title of Anziano,—Ancient—of the Credenza, and the Franciscan Leone was more than matched by the Dominican Pietro da Verona, whose zeal, sanctity, and awful inquisitorial powers were the strongest support of the Papacy in Milan. The murder of the Inquisitor in 1252 was almost certainly prompted by partisan motives. But it failed signally in its political as in its sectarian purpose, and for Papacy, people, and the Dominican Order alike, the bloody crown of the Martyr became an emblem of united strength and triumph. His death was followed by insurrections of the people. After a few years of comparative peace under the strong Podestà Manfredo Lancia, the feud between the two parties broke out afresh, and the Archbishop and nobles were driven out of the city. The following year a reconciliation took place (1257), and was solemnly confirmed in a treaty called the ‘Peace of St. Ambrose.’ In this the privileges already won by the popular party were formally conceded to them. All dignities and offices in the Commune, from the highest minister down to the town-trumpeter, were to be equally divided between the nobles and the Plebeians. Both sides swore to observe the peace in perpetuity. Yet two months later it was broken, and the nobles once more banished by the all-powerful Della Torre. They united with the Ghibellines of the other cities, and even treated with the terrible Ezzelino da Romano, whom the trembling populations of North Italy believed to be the son of the Devil. They promised him the Lordship of Milan if he would aid them, and in 1259, the last desperate year of his evil course, the Trevisan chief, issuing forth from Brescia, made a sudden stealthy dash with his famous horsemen upon the city. Martino della Torre, deceived as to the invader’s movements, had led the Milanese to meet him in another direction, and the city was undefended for the moment, and must have fallen into Ezzelino’s hands had not warning reached Martino just in time for him to hasten home and man the walls, thus defeating Ezzelino’s purpose.

The growing power of the Della Torre began before long to rouse suspicion and distrust in Rome, in spite of their steady championship of the popular cause. The hold of the Papacy upon Milan was in fact somewhat uncertain. The people still remembered with pride the ancient tradition of their Church, and were inclined at times to resent the constant interference of the Pope and his inquisitorial friars. In this feeling lay the possibility of a union between the Archbishop and the democratic party, which it was the policy of Rome to avert, even at the cost of prolonging and aggravating the miserable state of civil war in Milan. On the death of Frate Leone in 1257, the Della Torre sought to raise Raimondo, a son of Pagano the Good, to the archiepiscopal throne. Their intention was defeated by the opposition of the nobles, secretly instigated by Urban IV., and after some years of controversy over the vacant seat, Urban, thinking to hold the balance of parties in his own hands, appointed to it Otto Visconte (1263). The paradoxical spectacle of the Pope raising a Ghibelline noble to power, and the noble accepting it from the Pope—one of those strange eddies constantly occurring in the political current of the day—was completed by the alliance of the Della Torre with the celebrated Captain, Oberto da Pellavicino, protector of heretics, close comrade once of Ezzelino and the Ghibellines, and mortal foe of the Church. Into the hands of this typical figure of the North Italian drama, Martino, pressed by the hostility of the nobles and the secret machinations of the Pope, had in 1259 surrendered the Lordship of Milan for five years. Under his leadership the Torriani oppressed the friars, drove out the papal legate, Cardinal Ottaviano da Ubaldino, and on the elevation of Otto Visconte to the See, seized upon all the episcopal territories and revenues, and kept the new prelate for years out of his ecclesiastical capital. Pope Urban retaliated with spiritual thunders, and Milan lay long under the heavy spell of the papal interdict.

The Visconti and the Torriani were already deadly foes. The House of the Snake, which in Archbishop Otto, was now about to begin its great ascent, to the overthrow and destruction of the Tower of its rivals, probably derived its origin and name from one of the Viscounts of the Carlovingian rule, who had succeeded in converting the territory entrusted to his administration into an hereditary appanage. It was, in any case, of great antiquity in the city. The famous cognizance which its later career invested with a peculiar terror, is said to have been won by a noble crusader of the House, also an Otto, in single combat with a Saracen, who carried a shield emblazoned with the device of a seven-coiled serpent devouring a child. Otto slew the Saracen and adopted the device, which he transmitted to his descendants, and with it who knows what mysterious and persistent curse of guile and cruelty?

It is with Archbishop Otto, however, that the real fortunes of the House begin. Strong, crafty and determined, with a power of biding his time observable in a singular degree in all the notable members of his race, Otto was the right man to foster and direct the gradually reviving power of the nobles in Milan and lead them to victory over the Della Torre and the people. But for fifteen years he fought and intrigued in vain, leading his fellow-exiles and the forlorn hope of the Ghibelline party in Lombardy against the swelling tide of Guelf success, which the death of Ezzelino da Romano, the overthrow of the House of Suabia in Manfred and Corradino, and the ascendency of Anjou in the South, had brought to the full. The domination of the Torriani seemed to become every day more assured. Heads of the Lombard League, Martino and his family were all-powerful in North Italy. They drove the Ghibellines out of the surrounding cities, and established their own sympathisers in power everywhere. Many of the Communes accepted the actual sway of the great House. Martino died in 1263, and was buried in the Monastery of Chiaravalle. He was succeeded by his brother Filippo, on whose death, two years later, Napo, a son of the good Pagano, assumed the chieftainship.