The "inveterate deliberation," thus thoroughly matured, Gerard now proceeded to carry into effect. He came to Delft; obtained a hearing of Millers, the clergyman and intimate friend of Orange, showed him the Mansfeld seals, and was, somewhat against his will, sent to France, to exhibit them to Marechal Biron, who, it was thought, was soon to be appointed governor of Cambray. Through Orange's recommendation, the Burgundian was received into the suite of Noel de Caron, Seigneur de Schoneval, then setting forth on a special mission to the Duke of Anjou. While in France, Gerard could rest neither by day nor night, so tormented was he by the desire of accomplishing his project, and at length he obtained permission, upon the death of the Duke, to carry this important intelligence to the Prince of Orange. The despatches having been entrusted to him, he travelled posthaste to Delft, and, to his astonishment, the letters had hardly been delivered before he was summoned in person to the chamber of the Prince. Here was an opportunity such as he had never dared to hope for. The arch-enemy to the Church and to the human race, whose death, would confer upon his destroyer wealth and nobility in this world, besides a crown of glory in the next, lay unarmed, alone, in bed, before the man who had thirsted seven long years for his blood.

Balthazar could scarcely control his emotions sufficiently to answer the questions which the Prince addressed to him concerning the death of Anjou, but Orange, deeply engaged with the despatches, and with the reflections which their deeply-important contents suggested, did not observe the countenance of the humble Calvinist exile, who had been recently recommended to his patronage by Millers. Gerard, had, moreover, made no preparation for an interview so entirely unexpected, had come unarmed, and had formed no plan for escape. He was obliged to forego his prey when most within his reach, and after communicating all the information which the Prince required, he was dismissed from the chamber.

It was Sunday morning, and the bells were tolling for church. Upon leaving the house he loitered about the courtyard, furtively examining the premises, so that a sergeant of halberdiers asked him why he was waiting there. Balthazar meekly replied that he was desirous of attending divine worship in the church opposite, but added, pointing to, his shabby and travel-stained attire, that, without at least a new pair of shoes and stockings, he was unfit to join the congregation. Insignificant as ever, the small, pious, dusty stranger excited no suspicion in the mind of the good-natured sergeant. He forthwith spoke of the wants of Gerard to an officer, by whom they were communicated to Orange himself, and the Prince instantly ordered a sum of money to be given him. Thus Balthazar obtained from William's charity what Parma's thrift had denied—a fund for carrying out his purpose.

Next morning, with the money thus procured he purchased a pair of pistols, or small carabines, from a soldier, chaffering long about the price because the vender could not supply a particular kind of chopped bullets or slugs which he desired. Before the sunset of the following day that soldier had stabbed himself to the heart, and died despairing, on hearing for what purpose the pistols had been bought.

On Tuesday, the 10th of July, 1584, at about half-past twelve, the Prince, with his wife on his arm, and followed by the ladies and gentlemen of his family, was going to the dining-room. William the Silent was dressed upon that day, according to his usual custom, in very plain fashion. He wore a wide-leaved, loosely-shaped hat of dark felt; with a silken cord round the crown-such as had been worn by the Beggars in the early days of the revolt. A high ruff encircled his neck, from which also depended one of the Beggar's medals, with the motto, "Fideles au roy jusqu'a la besace," while a loose surcoat of grey frieze cloth, over a tawny leather doublet, with wide, slashed underclothes completed his costume. Gerard presented himself at the doorway, and demanded a passport. The Princess, struck with the pale and agitated countenance of the man, anxiously questioned her husband concerning the stranger. The Prince carelessly observed that "it was merely a person who came for a passport," ordering, at the same time, a secretary forthwith to prepare one. The Princess, still not relieved, observed in an under-tone that "she had never seen so villainous a countenance." Orange, however, not at all impressed with the appearance of Gerard, conducted himself at table with his usual cheerfulness, conversing much with the burgomaster of Leewarden, the only guest present at the family dinner, concerning the political and religious aspects of Friesland. At two o'clock the company rose from table. The Prince led the way, intending to pass to his private apartments above. The dining-room, which was on the ground floor, opened into a little square vestibule, which communicated, through an arched passageway, with the main entrance into the court-yard. This vestibule was also directly at the foot of the wooden staircase leading to the next floor, and was scarcely six feet in width. Upon its left side, as one approached the stairway, was an obscure arch, sunk deep in the wall, and completely in the shadow of the door. Behind this arch a portal opened to the narrow lane at the side of the house. The stairs themselves were completely lighted by a large window, half way up the flight. The Prince came from the dining-room, and began leisurely to ascend. He had only reached the second stair, when a man emerged from the sunken arch, and, standing within a foot or two of him, discharged a pistol full at his heart. Three balls entered his body, one of which, passing quite through him, struck with violence against the wall beyond. The Prince exclaimed in French, as he felt the wound, "O my God; have mercy upon my soul! O my God, have mercy upon this poor people."

These were the last words he ever spoke, save that when his sister, Catherine of Schwartzburg, immediately afterwards asked him if he commended his soul to Jesus Christ, he faintly answered, "Yes." His master of the horse, Jacob van Maldere, had caught him in his arms as the fatal shot was fired. The Prince was then placed on the stairs for an instant, when he immediately began to swoon. He was afterwards laid upon a couch in the dining-room, where in a few minutes, he breathed his last in the arms of his wife and sister.

The murderer succeeded in making his escape through the side door, and sped swiftly up the narrow lane. He had almost reached the ramparts, from which he intended to spring into the moat, when he stumbled over a heap of rubbish. As he rose, he was seized by several pages and halberdiers, who had pursued him from the house. He had dropped his pistols upon the spot where he had committed the crime, and upon his person were found a couple, of bladders, provided with apiece of pipe with which he had intended to assist himself across the moat, beyond which a horse was waiting for him. He made no effort to deny his identity, but boldly avowed himself and his deed. He was brought back to the house, where he immediately underwent a preliminary examination before the city magistrates. He was afterwards subjected to excruciating tortures; for the fury against the wretch who had destroyed the Father of the country was uncontrollable, and William the Silent was no longer alive to intercede—as he had often done before—in behalf of those who assailed his life.

The organization of Balthazar Gerard would furnish a subject of profound study, both for the physiologist and the metaphysician. Neither wholly a fanatic, nor entirely a ruffian, he combined the most dangerous elements of both characters. In his puny body and mean exterior were enclosed considerable mental powers and accomplishments, a daring ambition, and a courage almost superhuman. Yet those qualities led him only to form upon the threshold of life a deliberate determination to achieve greatness by the assassin's trade. The rewards held out by the Ban, combining with his religious bigotry and his passion for distinction, fixed all his energies with patient concentration upon the one great purpose for which he seemed to have been born, and after seven years' preparation, he had at last fulfilled his design.

Upon being interrogated by the magistrates, he manifested neither despair nor contrition, but rather a quiet exultation. "Like David," he said, "he had slain Goliath of Gath."

When falsely informed that his victim was not dead, he showed no credulity or disappointment. He had discharged three poisoned balls into the Prince's stomach, and he knew that death must have already ensued. He expressed regret, however, that the resistance of the halberdiers had prevented him from using his second pistol, and avowed that if he were a thousand leagues away he would return in order to do the deed again, if possible. He deliberately wrote a detailed confession of his crime, and of the motives and manner of its commission, taking care, however, not to implicate Parma in the transaction. After sustaining day after day the most horrible tortures, he subsequently related his interviews with Assonleville and with the president of the Jesuit college at Treves adding that he had been influenced in his work by the assurance of obtaining the rewards promised by the Ban. During the intervals of repose from the rack he conversed with ease, and even eloquence, answering all questions addressed to him with apparent sincerity. His constancy in suffering so astounded his judges that they believed him supported by witchcraft. "Ecce homo!" he exclaimed, from time to time, with insane blasphemy, as he raised his blood-streaming head from the bench. In order to destroy the charm which seemed to render him insensible to pain, they sent for the shirt of a hospital patient, supposed to be a sorcerer. When clothed in this garment, however, Balthazar was none the less superior to the arts of the tormentors, enduring all their inflictions, according to an eye-witness, "without once exclaiming, Ah me!" and avowing that he would repeat his enterprise, if possible, were he to die a thousand deaths in consequence. Some of those present refused to believe that he was a man at all. Others asked him how long since he had sold himself to the Devil? to which he replied, mildly, that he had no acquaintance whatever with the Devil. He thanked the judges politely for the food which he received in prison, and promised to recompense them for the favor. Upon being asked how that was possible, he replied; that he would serve as their advocate in Paradise.