In the course of the autumn, an attempt was made to play the same game at Amsterdam. A plot was discovered, before it was fairly matured, to seize the magistrates of that important city, to gain possession of the arsenals, and to place the government in the hands of well-known Leicestrians. A list of fourteen influential citizens, drawn up in the writing of Burgrave, the Earl's confidential secretary, was found, all of whom, it was asserted, had been doomed to the scaffold.

The plot to secure Amsterdam had failed, but, in North Holland, Medenblik was held firmly for Leicester, by Diedrich Sonoy, in the very teeth of the States. The important city of Enkhuyzen, too, was very near being secured for the Earl, but a still more significant movement was made at Leyden. That heroic city, ever since the famous siege of 1574, in which the Spaniard had been so signally foiled, had distinguished itself by great liberality of sentiment in religious matters. The burghers were inspired by a love of country, and a hatred of oppression, both civil and, ecclesiastical; and Papists and Protestants, who had fought side by side against the common foe, were not disposed to tear each other to pieces, now that he had been excluded from their gates. Meanwhile, however, refugee Flemings and Brabantines had sought an asylum in the city, and being, as usual, of the strictest sect of the Calvinists were shocked at the latitudinarianism which prevailed. To the honour of the city—as it seems to us now—but, to their horror, it was even found that one or two Papists had seats in the magistracy. More than all this, there was a school in the town kept by a Catholic, and Adrian van der Werff himself—the renowned burgomaster, who had sustained the city during the dreadful leaguer of 1574, and who had told the famishing burghers that they might eat him if they liked, but that they should never surrender to the Spaniards while he remained alive—even Adrian van der Werff had sent his son to this very school? To the clamour made by the refugees against this spirit of toleration, one of the favourite preachers in the town, of Arminian tendencies, had declared in the pulpit, that he would as lieve see the Spanish as the Calvinistic inquisition established over his country; using an expression, in regard to the church of Geneva, more energetic than decorous.

It was from Leyden that the chief opposition came to a synod, by which a great attempt was to be made towards subjecting the new commonwealth to a masked theocracy; a scheme which the States of Holland had resisted with might and main. The Calvinistic party, waxing stronger in Leyden, although still in a minority, at last resolved upon a strong effort to place the city in the hands of that great representative of Calvinism, the Earl of Leicester. Jacques Volmar, a deacon of the church, Cosmo de Pescarengis, a Genoese captain of much experience in the service of the republic, Adolphus de Meetkerke, former president of Flanders, who had been, by the States, deprived of the seat in the great council to which the Earl had appointed him; Doctor Saravia, professor of theology in the university, with other deacons, preachers, and captains, went at different times from Leyden to Utrecht, and had secret interviews with Leicester.

A plan was at last agreed upon, according to which, about the middle of October, a revolution should be effected in Leyden. Captain Nicholas de Maulde, who had recently so much distinguished himself in the defence of Sluys, was stationed with two companies of States' troops in the city. He had been much disgusted—not without reason—at the culpable negligence through which the courageous efforts of the Sluys garrison had been set at nought, and the place sacrificed, when it might so easily have been relieved; and he ascribed the whole of the guilt to Maurice, Hohenlo, and the States, although it could hardly be denied that at least an equal portion belonged to Leicester and his party. The young captain listened, therefore, to a scheme propounded to him by Colonel Cosine, and Deacon Volmar, in the name of Leicester. He agreed, on a certain day, to muster his company, to leave the city by the Delft gate—as if by command of superior authority—to effect a junction with Captain Heraugiere, another of the distinguished malcontent defenders of Sluys, who was stationed, with his command, at Delft, and then to re-enter Leyden, take possession of the town-hall, arrest all the magistrates, together with Adrian van der Werff, ex-burgomaster, and proclaim Lord Leicester, in the name of Queen Elizabeth, legitimate master of the city. A list of burghers, who were to be executed, was likewise agreed upon, at a final meeting of the conspirators in a hostelry, which bore the ominous name of 'The Thunderbolt.' A desire had been signified by Leicester, in the preliminary interviews at Utrecht, that all bloodshed, if possible, should be spared, but it was certainly an extravagant expectation, considering the temper, the political convictions, and the known courage of the Leyden burghers, that the city would submit, without a struggle, to this invasion of all their rights. It could hardly be doubted that the streets would run red with blood, as those of Antwerp had done, when a similar attempt, on the part of Anjou, had been foiled.

Unfortunately for the scheme, a day or two before the great stroke was to be hazarded, Cosmo de Pescarengis had been accidentally arrested for debt. A subordinate accomplice, taking alarm, had then gone before the magistrate and revealed the plot. Volmar and de Maulde fled at once, but were soon arrested in the neighbourhood. President de Meetkerke, Professor Saravia, the preacher Van der Wauw, and others most compromised, effected their escape. The matter was instantly laid before the States of Holland by the magistracy of Leyden, and seemed of the gravest moment. In the beginning of the year, the fatal treason of York and Stanley had implanted a deep suspicion of Leicester in the hearts of almost all the Netherlanders, which could not be eradicated. The painful rumours concerning the secret negotiations with Spain, and the design falsely attributed to the English Queen, of selling the chief cities of the republic to Philip as the price of peace, and of reimbursement for expenses incurred by her, increased the general excitement to fever. It was felt by the leaders of the States that as mortal a combat lay before them with the Earl of Leicester, as with the King of Spain, and that it was necessary to strike a severe blow, in order to vindicate their imperilled authority.

A commission was appointed by the high court of Holland, acting in conjunction with the States of the Provinces, to try the offenders. Among the commissioners were Adrian van der Werff, John van der Does, who had been military commandant of Leyden during the siege, Barneveld, and other distinguished personages, over whom Count Maurice presided. The accused were subjected to an impartial trial. Without torture, they confessed their guilt. It is true, however, that Cosmo was placed within sight of the rack. He avowed that his object had been to place the city under the authority of Leicester, and to effect this purpose, if possible, without bloodshed. He declared that the attempt was to be made with the full knowledge and approbation of the Earl, who had promised him the command of a regiment of twelve companies, as a recompense for his services, if they proved successful. Leicester, said Cosmo, had also pledged himself, in case the men, thus executing his plans, should be discovered and endangered, to protect and rescue them, even at the sacrifice of all his fortune, and of the office he held. When asked if he had any written statement from his Excellency to that effect, Cosmo replied, no, nothing but his princely word which he had voluntarily given.

Volmar made a similar confession. He, too, declared that he had acted throughout the affair by express command of the Earl of Leicester. Being asked if he had any written evidence of the fact, he, likewise, replied in the negative. "Then his Excellency will unquestionably deny your assertion," said the judges. "Alas, then am I a dead man," replied Volmar, and the unfortunate deacon never spoke truer words. Captain de Maulde also confessed his crime. He did not pretend, however, to have had any personal communication with Leicester, but said that the affair had been confided to him by Colonel Cosmo, on the express authority of the Earl, and that he had believed himself to be acting in obedience to his Excellency's commands.

On the 26th October, after a thorough investigation, followed by a full confession on the part of the culprits, the three were sentenced to death. The decree was surely a most severe one. They had been guilty of no actual crime, and only in case of high treason could an intention to commit a crime be considered, by the laws of the state, an offence punishable with death. But it was exactly because it was important to make the crime high treason that the prisoners were condemned. The offence was considered as a crime not against Leyden, but as an attempt to levy war upon a city which was a member of the States of Holland and of the United States. If the States were sovereign, then this was a lesion of their sovereignty. Moreover, the offence had been aggravated by the employment of United States' troops against the commonwealth of the United States itself. To cut off the heads of these prisoners was a sharp practical answer to the claims of sovereignty by Leicester, as representing the people, and a terrible warning to all who might, in future; be disposed to revive the theories of Deventer and Burgrave.

In the case of De Maulde the punishment seemed especially severe. His fate excited universal sympathy, and great efforts were made to obtain his pardon. He was a universal favourite; he was young; he was very handsome; his manners were attractive; he belonged to an ancient and honourable race. His father, the Seigneur de Mansart, had done great services in the war of independence, had been an intimate friend of the great Prince of Orange, and had even advanced large sums of money to assist his noble efforts to liberate the country. Two brothers of the young captain had fallen in the service of the republic. He, too, had distinguished himself at Ostend, and his gallantry during the recent siege of Sluys had been in every mouth, and had excited the warm applause of so good a judge of soldiership as the veteran Roger Williams. The scars of the wounds received in the desperate conflicts of that siege were fresh upon his breast. He had not intended to commit treason, but, convinced by the sophistry of older soldiers than himself, as well as by learned deacons and theologians, he had imagined himself doing his duty, while obeying the Earl of Leicester. If there were ever a time for mercy, this seemed one, and young Maurice of Nassau might have remembered, that even in the case of the assassins who had attempted the life of his father, that great-hearted man had lifted up his voice—which seemed his dying one—in favour of those who had sought his life.

But they authorities were inexorable. There was no hope of a mitigation of punishment, but a last effort was made, under favour of a singular ancient custom, to save the life of De Maulde. A young lady of noble family in Leyden—Uytenbroek by name—claimed the right of rescuing the condemned malefactor, from the axe, by appearing upon the scaffold, and offering to take him for her husband.