On the 2nd of January, the day previous to the tournament, the Earl of Rutland went secretly to Windsor and betrayed the whole plot to the king. It is said that Rutland had received a letter from one of the conspirators while at dinner, which his father, the Duke of York, would insist on reading, and the fatal secret thus coming out, York had compelled his son to reveal the whole to Henry at once. But it must be recollected that Rutland had as fatal a tendency to treachery as Holland had to murder. He had betrayed Richard while in Ireland, and on his return in Wales, had gone over at the critical moment to Lancaster. He now again entered into a murderous plot against the new king, and then, with equal facility, he betrayed his fellow-conspirators. It was an ominous mark of want of caution in the conspirators admitting him as one of their members to their secret. Henry was so well acquainted with the false nature of the man who had thus sacrificed every party that he had been connected with, that he hesitated to give credit to this story. At length, having convinced himself of the reality of the plot, he remained quiet during the day at Windsor, and in the dusk of the evening set out secretly to London.

The conspirators, who had with them the staunch friends of Richard, the Earl of Salisbury and Lord Lumley, assembled on the day appointed at Oxford, but were surprised to find that neither the king nor their own accomplice, Rutland, had arrived. Suspecting treachery, they resolved to lose no time, but to surprise Henry at Windsor, where they knew he had but a slender guard. With a body of 500 horse they made a rapid ride that evening to Windsor, but arrived only to find that the intended victim had escaped. They were greatly disconcerted, but their partisans having joined them from Oxford, they determined to raise the standard of revolt, and to give out that Richard was at large, and at their head in assertion of his crown and dignity.

In order to give credit to their story of King Richard's escape, they dressed up Richard's chaplain, Maudelin, to represent him. Maudelin was said to be so like Richard in person and features that every one who saw him declared that he was the king without doubt. Maudelin was supposed to be an illegitimate son of one of the royal family. He had been implicated in the illegal execution of the Duke of Gloucester at Calais, had adhered to Richard through all his fortunes, and was taken with him at Flint.

The army of the insurgents increased, but it is evident that their enterprise was ill-concerted, and their counsels were now distracted. Hearing that Henry was already at Kingston-on-Thames at the head of 20,000 men, they resolved to retire into the west. They went on, proclaiming Richard in all the towns and villages in their route, and the next evening they took up their quarters in Cirencester.

The young queen, according to several authorities, took a warm interest in this attempt. The Earls of Kent and Salisbury, it is said, went to Sunninghill, where she was staying, and told her that they had driven Bolingbroke from the throne; that her husband was at liberty, and was then on the march to meet her, at the head of 100,000 men. Overjoyed at this news, says Sir John Haywood, the queen put herself at their disposal, and took an extraordinary pleasure in ordering the badges of Henry IV. to be torn from her household and replaced by those of her husband.

The deception was a cruel one; but the murderer Huntingdon was not likely to be very considerate of the queen's personal feelings. It would be enough for him that drowning men catch at straws, and that the presence of the real queen might be more effectual even than a sham king. The poor queen set out with the Earls of Kent and Salisbury on their march towards Wallingford and Abingdon. She was with the barons when they entered Cirencester. But there a terrible fate awaited them. The mayor had received the king's writ to oppose and seize the traitors. He summoned the burghers and the people, and at midnight they made an attack on the quarters of Kent and Salisbury. On attempting to escape, the wretched noblemen found archers posted in every street; and, after a resistance of six hours, they were compelled to surrender, and were conducted into the abbey. In the middle of the following night, however, a fire breaking out in the abbey, which was attributed to their party, they were brought out and beheaded on the spot by the populace. The women, it appears, were as zealous in seizing the insurgents as the men, and that they did not exceed the king's orders is very clear, from the fact that Henry made a grant of four does and a hogshead of wine annually to the men, and of six bucks and a hogshead of wine to the women of that town.

The unfortunate Isabella was reconducted, strictly guarded, from Cirencester to the palace of Havering-at-Bower; and this continued her place of residence during the tragical transactions which followed this abortive insurrection.

The fate of the other leaders of the revolt was summary and sanguinary. The Earl of Gloucester and Lord Lumley went into the west of England, as was proposed, but were seized and put to death by the populace at Bristol. As for Huntingdon, the accounts of his end vary. One relation says that he was seized in Essex and committed to the Tower on the 10th of January, and five days afterwards beheaded, with circumstances of great cruelty. But others, and apparently the more probable, are that he was taken in Essex, and conveyed to Pleshy, the seat of the late Duke of Gloucester, and, as one of those who had been associated with the late king in the treacherous arrest and murder of the duke, was put to death at the suggestion of the Duchess of Hereford, the eldest of Gloucester's daughters. Such was the sanguinary termination of this ill-advised and ill-conducted insurrection—a proper prelude, as Henry the historian has justly observed, "to those scenes of blood and cruelty which followed in the long contest between the Houses of York and Lancaster, occasioned by the fatal ambition of Henry IV."

A movement was now made by the Royal Council, undoubtedly originated by Henry, for ascertaining the fate of the deposed king. The late insurrection had shown the perils resulting to the usurper from the presence of the true king—though in strict concealment. So long as Richard remained alive would attempts be made by his partisans to restore him; and, however popular Henry might be for a time, he was too well versed in human nature not to be aware that any cause of offence on his part, any heavy imposition or restriction of liberty, however necessary, would immediately turn the public mind to the dethroned monarch, and operate in the latter's favour. These considerations, there is reason to believe, had led to his immediate destruction. From the day that he had been left in the Tower after his formal abdication, the most profound mystery had covered his existence. There were many stories of his being, like Edward II., conveyed secretly from one castle to another by his keepers. It was said that he had been kept some time in Leeds Castle in Kent, and thence removed to Pontefract. But no one really knew where he was, or how he was treated. But now news had reached the court of France that Richard was really dead, and the council of Henry, as if of their own accord, placed a minute on their book to this effect:—"It seemeth expedient to the council to speak to the king, that in case Richard, lately king, &c., be still alive, he be put in safe keeping, in conformity with the advice of the lords; but if he be departed this life, that then he be shown openly to the people, that they may have the knowledge of it."