Diedrich Sonoy arrived on the 2nd June at Enkbuizen. He was provided by the Prince with a commission, appointing him Lieutenant-Governor of North Holland or Waterland. Thus, to combat the authority of Alva was set up the authority of the King. The stadholderate over Holland and Zealand, to which the Prince had been appointed in 1559, he now reassumed. Upon this fiction reposed the whole provisional polity of the revolted Netherlands. The government, as it gradually unfolded itself, from this epoch forward until the declaration of independence and the absolute renunciation of the Spanish sovereign power, will be sketched in a future chapter. The people at first claimed not an iota more of freedom than was secured by Philip's coronation oath. There was no pretence that Philip was not sovereign, but there was a pretence and a determination to worship God according to conscience, and to reclaim the ancient political "liberties" of the land. So long as Alva reigned, the Blood Council, the inquisition, and martial law, were the only codes or courts, and every charter slept. To recover this practical liberty and these historical rights, and to shake from their shoulders a most sanguinary government, was the purpose of William and of the people. No revolutionary standard was displayed.

The written instructions given by the Prince to his Lieutenant Sonoy were to "see that the Word of God was preached, without, however, suffering any hindrance to the Roman Church in the exercise of its religion; to restore fugitives and the banished for conscience sake, and to require of all magistrates and officers of guilds and brotherhoods an oath of fidelity." The Prince likewise prescribed the form of that oath, repeating therein, to his eternal honor, the same strict prohibition of intolerance. "Likewise," said the formula, "shall those of 'the religion' offer no let or hindrance to the Roman churches."

The Prince was still in Germany, engaged in raising troops and providing funds. He directed; however, the affairs of the insurgent provinces in their minutest details, by virtue of the dictatorship inevitably forced upon him both by circumstances and by the people. In the meantime; Louis of Nassau, the Bayard of the Netherlands, performed a most unexpected and brilliant exploit. He had been long in France, negotiating with the leaders of the Huguenots, and, more secretly, with the court. He was supposed by all the world to be still in that kingdom, when the startling intelligence arrived that he had surprised and captured the important city of Mons. This town, the capital of Hainault, situate in a fertile, undulating, and beautiful country, protected by lofty walls, a triple moat, and a strong citadel, was one of the most flourishing and elegant places in the Netherlands. It was, moreover, from its vicinity to the frontiers of France; a most important acquisition to the insurgent party. The capture was thus accomplished. A native of Mons, one Antony Oliver, a geographical painter, had insinuated himself into the confidence of Alva, for whom he had prepared at different times some remarkably well-executed maps of the country. Having occasion to visit France, he was employed by the Duke to keep a watch upon the movements of Louis of Nassau, and to make a report as to the progress of his intrigues with the court of France. The painter, however, was only a spy in disguise, being in reality devoted to the cause of freedom, and a correspondent of Orange and his family. His communications with Louis, in Paris, had therefore a far different result from the one anticipated by Alva. A large number of adherents within the city of Mons had already been secured, and a plan was now arranged between Count Louis, Genlis, De la Noue, and other distinguished Huguenot chiefs, to be carried out with the assistance of the brave and energetic artist.

On the 23rd of May, Oliver appeared at the gates of Mons, accompanied by three wagons, ostensibly containing merchandise, but in reality laden with arquebusses. These were secretly distributed among his confederates in the city. In the course of the day Count Louis arrived in the neighbourhood, accompanied by five hundred horsemen and a thousand foot soldiers. This force he stationed in close concealment within the thick forests between Maubeuge and Mons. Towards evening he sent twelve of the most trusty and daring of his followers, disguised as wine merchants, into the city. These individuals proceeded boldly to a public house, ordered their supper, and while conversing with the landlord, carelessly inquired at what hour next morning the city gates would be opened. They were informed that the usual hour was four in the morning, but that a trifling present to the porter would ensure admission, if they desired it, at an earlier hour. They explained their inquiries by a statement that they had some casks of wine which they wished to introduce into the city before sunrise. Having obtained all the information which they needed, they soon afterwards left the tavern. The next day they presented themselves very early at the gate, which the porter, on promise of a handsome "drink-penny," agreed to unlock. No sooner were the bolts withdrawn, however, than he was struck dead, while about fifty dragoons rode through the gate. The Count and his followers now galloped over the city in the morning twilight, shouting "France! liberty! the town is ours!" "The Prince is coming!" "Down with the tenth penny; down with the murderous Alva!" So soon as a burgher showed his wondering face at the window, they shot at him with their carbines. They made as much noise, and conducted themselves as boldly as if they had been at least a thousand strong.

Meantime, however, the streets remained empty; not one of their secret confederates showing himself. Fifty men could surprise, but were too few to keep possession of the city. The Count began to suspect a trap. As daylight approached the alarm spread; the position of the little band was critical. In his impetuosity, Louis had far outstripped his army, but they had been directed to follow hard upon his footsteps, and he was astonished that their arrival was so long delayed. The suspense becoming intolerable, he rode out of the city in quest of his adherents, and found them wandering in the woods, where they had completely lost their way. Ordering each horseman to take a foot soldier on the crupper behind him, he led them rapidly back to Mons. On the way they were encountered by La Noue, "with the iron arm," and Genlis, who, meantime, had made an unsuccessful attack to recover Valenciennes, which within a few hours had been won and lost again. As they reached the gates of Mons, they found themselves within a hair's breadth of being too late; their adherents had not come forth; the citizens had been aroused; the gates were all fast but one—and there the porter was quarrelling with a French soldier about an arquebuss. The drawbridge across the moat was at the moment rising; the last entrance was closing, when Guitoy de Chaumont, a French officer, mounted on a light Spanish barb, sprang upon the bridge as it rose. His weight caused it to sink again, the gate was forced, and Louis with all his men rode triumphantly into the town.

The citizens were forthwith assembled by sound of bell in the market-place. The clergy, the magistracy, and the general council were all present. Genlis made the first speech, in which he disclaimed all intention of making conquests in the interest of France. This pledge having been given, Louis of Nassau next addressed the assembly: "The magistrates," said he, "have not understoood my intentions. I protest that I am no rebel to the King; I prove it by asking no new oaths from any man. Remain bound by your old oaths of allegiance; let the magistrates continue to exercise their functions—to administer justice. I imagine that no person will suspect a brother of the Prince of Orange capable of any design against the liberties of the country. As to the Catholic religion, I take it under my very particular protection. You will ask why I am in Mons at the head of an armed force: are any of you ignorant of Alva's cruelties? The overthrow of this tyrant is as much the interest of the King as of the people, therefore there is nothing in my present conduct inconsistent with fidelity to his Majesty. Against Alva alone I have taken up arms; 'tis to protect you against his fury that I am here. It is to prevent the continuance of a general rebellion that I make war upon him. The only proposition which I have to make to you is this—I demand that you declare Alva de Toledo a traitor to the King, the executioner of the people, an enemy to the country, unworthy of the government, and hereby deprived of his authority."

The magistracy did not dare to accept so bold a proposition; the general council, composing the more popular branch of the municipal government, were comparatively inclined to favor Nassau, and many of its members voted for the downfall of the tyrant. Nevertheless the demands of Count Louis were rejected. His position thus became critical. The civic authorities refused to, pay for his troops, who were, moreover, too few, in number to resist the inevitable siege. The patriotism of the citizens was not to be repressed, however, by the authority, of the magistrates; many rich proprietors of the great cloth and silk manufactories, for which Mons was famous, raised, and armed companies at their own expense; many volunteer troops were also speedily organized and drilled, and the fortifications were put in order. No attempt was made to force the reformed religion upon the inhabitants, and even Catholics who were discovered in secret correspondence with the enemy were treated with such extreme gentleness by Nassau as to bring upon him severe reproaches from many of his own party.

A large collection of ecclesiastical plate, jewellery, money, and other valuables, which had been sent to the city for safe keeping from the churches and convents of the provinces, was seized, and thus, with little bloodshed and no violence; was the important city secured for the insurgents. Three days afterwards, two thousand infantry, chiefly French, arrived in the place. In the early part of the following month Louis was still further strengthened by the arrival of thirteen hundred foot and twelve hundred horsemen, under command of Count Montgomery, the celebrated officer, whose spear at the tournament had proved fatal to Henry the Second. Thus the Duke of Alva suddenly found himself exposed to a tempest of revolution. One thunderbolt after another seemed descending around him in breathless succession. Brill and Flushing had been already lost; Middelburg was so closely invested that its fall seemed imminent, and with it would go the whole island of Walcheren, the key to all the Netherlands. In one morning he had heard of the revolt of Enkbuizen and of the whole Waterland; two hours later came the news of the Valenciennes rebellion, and next day the astonishing capture of Mons. One disaster followed hard upon another. He could have sworn that the detested Louis of Nassau, who had dealt this last and most fatal stroke, was at that moment in Paris, safely watched by government emissaries; and now he had, as it were, suddenly started out of the earth, to deprive him of this important city, and to lay bare the whole frontier to the treacherous attacks of faithless France. He refused to believe the intelligence when it was first announced to him, and swore that he had certain information that Count Louis had been seen playing in the tennis-court at Paris, within so short a period as to make his presence in Hainault at that moment impossible. Forced, at last, to admit the truth of the disastrous news, he dashed his hat upon the ground in a fury, uttering imprecations upon the Queen Dowager of France, to whose perfidious intrigues he ascribed the success of the enterprise, and pledging himself to send her Spanish thistles, enough in return for the Florentine lilies which she had thus bestowed upon him.

In the midst of the perplexities thus thickening around him, the Duke preserved his courage, if not his temper. Blinded, for a brief season, by the rapid attacks made upon him, he had been uncertain whither to direct his vengeance. This last blow in so vital a quarter determined him at once. He forthwith despatched Don Frederic to undertake the siege of Mons, and earnestly set about raising large reinforcements to his army. Don Frederic took possession, without much opposition, of the Bethlehem cloister in the immediate vicinity of the city, and with four thousand troops began the investment in due form.

Alva had, for a long time, been most impatient to retire from the provinces. Even he was capable of human emotions. Through the sevenfold panoply of his pride he had been pierced by the sharpness of a nation's curse. He was wearied with the unceasing execrations which assailed his ears. "The hatred which the people bear me," said he, in a letter to Philip, "because of the chastisement which it has been necessary for me to inflict, although with all the moderation in the world, make all my efforts vain. A successor will meet more sympathy and prove more useful." On the 10th June, the Duke of Medina Coeli; with a fleet of more than forty sail, arrived off Blankenburg, intending to enter the Scheld. Julian Romero, with two thousand Spaniards, was also on board the fleet. Nothing, of course, was known to the new comers of the altered condition of affairs in the Netherlands, nor of the unwelcome reception which they were like to meet in Flushing. A few of the lighter craft having been taken by the patriot cruisers, the alarm was spread through all the fleet. Medina Coeli, with a few transports, was enabled to effect his escape to Sluys, whence he hastened to Brussels in a much less ceremonious manner than he had originally contemplated. Twelve Biscayan ships stood out to sea, descried a large Lisbon fleet, by a singular coincidence, suddenly heaving in sight, changed their course again, and with a favoring breeze bore boldly up the Hond; passed Flushing in spite of a severe cannonade from the forts, and eventually made good their entrance into Rammekens, whence the soldiery, about one-half of whom had thus been saved, were transferred at a very critical moment to Middelburg.