His father's exile dates from October 13, 1398, when Henry had just concluded his eleventh year. Whether up to that time he had been (p. 033) living chiefly in his father's house, or with his grandfather John of Gaunt, or with his maternal grandmother, or with his uncle Henry Beaufort either at Oxford or elsewhere, we have no positive evidence. John of Gaunt did not die till the 3rd of the following February, and he would, doubtless, have taken his grandson under his especial care, at all events on his father's banishment, probably assigning Henry Beaufort to be his tutor and governor. But when Richard sentenced Henry of Bolinbroke, he was too sensible of his own injustice, and too much alive, in this instance at least, to his own danger, to suffer Henry of Monmouth to remain at large. One of the most ancient, and most widely adopted principles of tyranny, pronounces the man "to be a fool, who when he makes away with a father, leaves the son in power to avenge his parent's wrongs." Accordingly Richard took immediate possession of the persons both of the son of the murdered Duke of Gloucester, and of Henry of Monmouth, of whose relatives, as the chroniclers say, he had reason to be especially afraid. John of Gaunt, we may conclude, now disabled as he was, by those infirmities[36] which hastened him to the grave[37] more rapidly than the mere progress of calm decay, could exert no effectual means (p. 034) either of sheltering his son from the unjust tyrant who sentenced him to ten years banishment from his native land, or of rescuing his grandson from the close custody of the same oppressor. Still the very name of that renowned duke must have put some restraint upon his royal nephew. The lion had yet life, and might put forth one dying effort, if the oppression were carried past his endurance; and it might have been thought well to let him linger and slumber on, till nature should have struggled with him finally. We find, consequently, that though before Bolinbroke's departure from England Richard had remitted four years of his banishment, as a sort of peace-offering perhaps to John of Gaunt, no sooner was that formidable person dead, than Richard, throwing off all semblance of moderation, exiled Bolinbroke for life, and seized and confiscated his property.[38] [Footnote 36: See the Remains of Thomas Gascoyne, a contemporary writer. Brit. Mus. 2 I. d. p. 530.] [Footnote 37: John of Gaunt died on the 3rd of February 1399, at the house of the Bishop of Ely in Holborn. Will. Worc.]