It was in the very first week of the year 1400 that Henry IV. discovered the treasonable plot, laid by the Lords Salisbury, Huntingdon, and others, to assassinate him during some solemn justs intended to be held at Oxford, professedly in honour of his accession. The King was then at Windsor; and, immediately on receiving information of the conspiracy, he returned secretly, but with all speed, to London.[79] The defeat of these treasonable designs, and (p. 076) the execution of the conspirators, are matter of general history; and, as the name of the Prince does not occur even incidentally in any accounts of the transaction, we need not dwell upon it. Probably he was then living with his father under the superintendence of Henry Beaufort, now Bishop of Winchester, from whom indeed up to this time he seems to have been much less separated than from his parent. We have already seen that, whether for the benefit of the "young bachelor," or, with an eye to his own security, unwilling to leave so able an enemy behind, King Richard, when he took the boy Henry with him to Ireland, caused his uncle and tutor (Henry Beaufort) to accompany him also.[80] The probability also has been shown to approach demonstration that his residence in Oxford could not have taken place at this time; but that it preceded his father's banishment, rather than followed his accession to the throne. Be this as it may, history (as far as it appears) makes no direct mention of the young Prince Henry through the spring of 1400. [Footnote 79: Some chroniclers say, that the conspiracy was made known to the Mayor of London, who forthwith hastened to the King at Windsor, and urged him to save himself and his children. The same pages tell us that John Holland Earl of Huntingdon was seized and beheaded in Essex by the Dowager Countess of Hereford.--Sloane MS.] [Footnote 80: Pat. p. 3, 22 Ric. II.] Soon, however, after the conspiracy against his father's life had been detected and frustrated, an event took place, already alluded to, which must have filled the warm and affectionate heart of Henry with feelings of sorrow and distress,--the premature death of Richard. That Henry had formed a sincere attachment for Richard, and long cherished (p. 077) his memory with gratitude for personal kindness, is unquestionable; and doubtless it must have been a source of anxiety and vexation to him that his father was accused in direct terms of having procured the death of the deposed monarch. He probably was convinced that the charge was an ungrounded calumny; yet, with his generous indignation roused by the charge of so foul a crime, he must have mingled feelings of increased regret at the miserable termination of his friend's life.