In the autumn of 1398, King Richard II stood at the apex of his power. A year earlier, in an act of calculated vengeance, he had ruthlessly dismantled the clique of senior noblemen, the Lords Appellant, who had humiliated him a decade before. The Duke of Gloucester was murdered, the Earl of Arundel executed, and the Earl of Warwick exiled. The English polity held its breath, witnessing the emergence of a king who ruled not by consent, but by fear and an increasingly exalted sense of his own divinely ordained majesty. Yet, within two years, this seemingly unassailable monarch would be a prisoner, stripped of his crown and destined for a murky death in Pontefract Castle. His downfall was not precipitated by a foreign invasion or a popular revolt, but by a single, catastrophic miscalculation—an act of greed and political folly that proved to be the tipping point for a generation of aggrieved nobility.
The crisis of 1399, which saw the deposition of Richard II and the accession of his cousin, Henry Bolingbroke, as King Henry IV, is one of the most dramatic transfers of power in English history. At its heart lies a profound lesson about the nature of late medieval kingship. As the Romanian brief insightfully suggests, Richard believed he was merely humiliating a rival when he confiscated the vast Lancastrian inheritance. In reality, he provided that rival with the perfect cause. In the sophisticated political landscape of late Plantagenet England, legitimacy was a delicate tapestry woven from threads of sacred bloodline, feudal obligation, and, crucially, the king’s adherence to the very laws of property and inheritance he was sworn to uphold. When Richard tore at that tapestry with the seizure of the Duchy of Lancaster, he did not just disinherit a single man; he attacked the foundational principles of the entire aristocratic order. In doing so, he did not merely undermine his cousin's position—he dug the foundations from beneath his own throne.
The Quarrel of the Dukes: A King’s Judgement
The chain of events leading to the fateful confiscation began with a public and venomous dispute between two of the most powerful men in the kingdom: Henry Bolingbroke, Duke of Hereford, and Thomas Mowbray, Duke of Norfolk. Both men had been junior members of the Lords Appellant in 1388, but had since reconciled with the king and had even been complicit in his revenge against their former co-conspirators in 1397. Theirs was a nervous existence, forever shadowed by the king's long memory and unpredictable temper.
In December 1397, as the two dukes rode from Brentford to London, Mowbray allegedly confided his fears to Bolingbroke. According to Bolingbroke’s later testimony before Parliament, Mowbray claimed that the King still intended to destroy them for their past association with the Appellants, stating, "we are on the point of being undone." He further alleged a plot to reverse the pardon they had received, a move that would leave them vulnerable to charges of treason. Whether Mowbray truly said this, or if Bolingbroke fabricated or exaggerated the conversation to eliminate a rival, remains a subject of historical debate. What is certain is that Bolingbroke saw an opportunity. He reported the conversation to his father, the immensely powerful and respected John of Gaunt, Duke of Lancaster, who promptly advised him to lay the matter before the King.
Richard II was placed in an invidious position. To ignore the accusation would show weakness; to believe it would mean acknowledging treasonous talk at the heart of his court. He chose to make the affair a public spectacle. Before Parliament at Shrewsbury in January 1398, Bolingbroke formally accused Mowbray of treason. Mowbray, outraged, threw down his gauntlet, challenging his accuser to trial by combat. This archaic, chivalric procedure, an appeal to the judgement of God, was accepted by the king. The stage was set for a dramatic showdown at Gosford Green, near Coventry, on 16 September 1398.
The event was orchestrated with all the pomp and circumstance of a coronation. A magnificent arena had been constructed. The King was enthroned on a grand scaffold, surrounded by the great and good of the realm. Bolingbroke and Mowbray, clad in full plate armour and mounted on their warhorses, entered the lists, prepared to fight to the death. The heralds sounded their trumpets. The combatants were poised to charge. At that precise moment, Richard threw down his warder, halting the proceedings.
In a breathtaking display of royal prerogative, the King announced he would judge the matter himself. Neither man, he declared, would be vindicated by God’s judgement that day. Instead, both would be punished. Mowbray, as the source of the seditious words, was exiled for life. Bolingbroke, for having given them audience, was banished for ten years, a term Richard graciously reduced to six just before his departure. Crucially, however, Richard sought to temper this blow with a solemn and legally binding promise. He issued Letters Patent, a public and official royal decree, assuring Bolingbroke that, should any inheritance fall due to him during his exile, he could appoint attorneys to claim it on his behalf. This specifically referred to the immense patrimony of his father, John of Gaunt, who was by then aging and in failing health. For Bolingbroke, this was a vital guarantee; for Richard, it was a promise he had no intention of keeping.
A Lincolnshire Lordship: The Power of the Duchy of Lancaster
To understand the magnitude of what came next, one must appreciate the sheer scale and importance of the Duchy of Lancaster. It was not merely a collection of estates; it was a state within a state, a palatinate with its own administration, courts, and chancellor. Its wealth was colossal, and its heartlands lay in the north and the Midlands, particularly in Lincolnshire.
For centuries, Lincolnshire’s landscape and society had been shaped by the power of great baronies. At the time of the Domesday Book in 1086, a small manor like Brattleby ("Bratelbi") was held by tenants under powerful Norman magnates like the Bishop of Bayeux and Gilbert de Gant. Over the succeeding centuries, these networks of lordship evolved. By the late fourteenth century, the Duchy of Lancaster was the pre-eminent power in the county. John of Gaunt held the Honour and Castle of Lincoln, and the sprawling Honour of Bolingbroke, centred on the castle where his son Henry had been born in 1367, was a nexus of Lancastrian influence. Its lands and associated fees stretched across the county, from the Wolds to the Fens.
The Duke of Lancaster was not an abstract, distant figure to the gentry and freeholders of Lincolnshire. He was their ultimate landlord, the dispenser of patronage, and the guarantor of local order. The stability of the Duchy meant the stability of their own tenures, their local courts, and their social standing. A knight holding a manor near Brattleby, for instance, might owe service to a lord who, in turn, owed service to the Duke of Lancaster at his castle in Lincoln. The entire feudal and social pyramid rested on the assumption that these lines of inheritance were secure. The well-being of the Lancastrian affinity—that vast network of retainers, office-holders, and tenants bound to the Duke by loyalty and self-interest—depended entirely on the smooth succession of the Duchy’s lands and titles. When Richard II acted against the Duchy, he was not just acting against Bolingbroke; he was sending a shockwave through the entire social fabric of counties like Lincolnshire.
The Fatal Inheritance and the King’s Tyranny
On 3 February 1399, John of Gaunt died at Ely Place in London. "This sun of the world, merciful and pious, this true olive-tree of peace… this shield of the kingdom, is taken from our midst," lamented the chronicler Adam of Usk. Gaunt had been a complex figure—ambitious in his youth, but in his later years a force for stability and a loyal, if powerful, subject of his nephew, the King. His death removed a crucial check on Richard’s autocratic tendencies. It also presented the King with a test of his own word.
Now, according to English law and the King’s own Letters Patent, Henry Bolingbroke, despite his exile in Paris, was the rightful Duke of Lancaster. The moment was thick with anticipation. Would the King honour his public pledge?
Richard’s response was swift and brutal. On 18 March 1399, a royal council convened at Westminster declared the Letters Patent issued to Bolingbroke null and void. The King’s councillors, either cowed by his authority or eager to profit from the spoils, decreed that Bolingbroke’s exile was to be extended for life and, most catastrophically, that the entire Lancastrian inheritance was forfeit to the Crown. The greatest estate in England was seized by the King. Its vast revenues were to be diverted to the royal treasury, in large part to fund Richard’s impending, and ill-advised, military expedition to Ireland.
This was Richard’s point of no return. The act was seen by the political nation not as a legitimate legal judgement, but as an act of pure tyranny. It breached the most fundamental tenet of the medieval social contract: the security of inherited property. The chronicler Thomas Walsingham, reflecting the outrage of the landed classes, condemned the decision as being made "without any lawful reason." If the King could arbitrarily disinherit the Duke of Lancaster, the premier peer of the realm, then no nobleman, no knight, no freeholder could consider their own patrimony safe. The right to inherit was not a gift from the king; it was a right under God and common law. By violating it so flagrantly, Richard transformed himself from a sovereign into a predator.
He had completely misread the political mood. Buoyed by the success of his 1397 coup and surrounded by sycophantic councillors, Richard believed his authority was absolute. He saw the seizure as the final, decisive move to eradicate the Lancastrian threat forever. Instead, he universalised it. He turned Henry Bolingbroke’s private grievance into a public cause. Bolingbroke was no longer just an aggrieved cousin seeking his lands; he became the potential champion of every landowner in England who feared the rapaciousness of an unbound monarch. The cause was perfect: clear, legally definable, and profoundly conservative. Bolingbroke would not be returning as a revolutionary, but as a restorer of law and custom against a king who had broken them.
The Return of the Avenger
In late May 1399, supremely confident in his position, Richard II sailed for Ireland, leaving his aging and ineffectual uncle, Edmund, Duke of York, as regent. It was a staggering strategic blunder. With the King and his army across the Irish Sea, England was left exposed.
From his exile in Paris, Bolingbroke had been watching and waiting. He had cultivated support among other disaffected nobles and was in contact with powerful figures at home, most notably the formidable Henry Percy, Earl of Northumberland, and his son, Henry 'Hotspur'. The confiscation of the Duchy was the signal they had been waiting for.
Around the beginning of July 1399, Henry Bolingbroke, accompanied by a small retinue that included the exiled Archbishop of Canterbury, Thomas Arundel, landed at Ravenspur on the Yorkshire coast—the same spot where an earlier Henry, the future King Henry VII, would land in 1485. His declared intention was a masterstroke of political propaganda. He claimed he had not come to challenge for the throne, but merely to reclaim his rightful inheritance: the Duchy of Lancaster. This moderate, legalistic claim was one that the northern lords, led by the Percys and the Nevilles, could rally to without immediately committing treason. They flocked to his banner, not as rebels against a king, but as supporters of a duke’s just cause.
The regent, the Duke of York, was powerless. His attempts to raise an army to oppose Bolingbroke foundered as lords and their retainers either sat on their hands or openly defected to the Lancastrian cause. Bolingbroke’s progress south became a triumphal procession. As his army grew, so did his ambition. By the time he reached the Welsh Marches to intercept Richard on his return from Ireland, the goal had shifted from the restoration of a duchy to the seizure of a crown.
Richard, receiving delayed news of the invasion, hurried back from Ireland, landing in Wales in late July. But he returned to a kingdom that had already deserted him. His army melted away. Betrayed and abandoned, he was cornered at Conway Castle and lured into a meeting with the Earl of Northumberland. He was captured and taken as a prisoner to Flint Castle, where he had his final, humiliating confrontation with the man he had wronged.
The Chronique de la Traïson et Mort de Richart Deux describes the scene: Bolingbroke, fully armed but with his visor raised, bowed low three times. Richard, standing on the castle walls, asked for his cousin’s purpose. Bolingbroke replied that he had come to help the King govern better, for the realm had been poorly managed for twenty-two years by his councillors. And, of course, he had come to claim his inheritance. The charade was almost over. Richard was escorted to London and imprisoned in the Tower. In September, a Parliament was called in which Richard was formally deposed, based on a long list of thirty-three articles of accusation. The confiscation of the Lancastrian inheritance and the violation of his oath featured prominently among them. Richard was judged to have "rendered himself unworthy" of the throne. On 13 October 1399, in Westminster Hall, Henry Bolingbroke was crowned King Henry IV.
Conclusion: The Throne Built on a Legal Pretext
The revolution of 1399 was a seminal event, demonstrating that in late medieval England, the king ruled under the law, not above it. Richard II’s tragic flaw was his failure to grasp this reality. He embraced a new, more absolutist theory of kingship, inspired by continental models, which held the monarch to be accountable to God alone. But the English aristocracy, whose power was rooted in land and hereditary right, operated under a different assumption: that their property and privileges were sacrosanct, protected by a common law that bound even the king.
The confiscation of the Duchy of Lancaster was the moment these two irreconcilable views of power collided. For Richard, it was the logical culmination of his campaign to centralise authority and eliminate over-mighty subjects. For the English nobility, it was an intolerable act of tyranny that threatened the security of every one of them. It was a psychological and political miscalculation of immense proportions, a self-inflicted wound from which his reign could not recover.
Henry Bolingbroke’s genius lay in his exploitation of this error. He cloaked his ambition in the language of legal right and conservative tradition. He invaded not to overthrow a king, but to reclaim a duchy. This provided him with the necessary legitimacy to rally support and paralyse opposition. The crown became his almost by default, a consequence of a crisis that Richard himself had engineered. Yet, the manner of his coming to power—a usurpation, however well-justified—would cast a long shadow. The question of legitimacy, so central to the events of 1399, would haunt the Lancastrian dynasty and ultimately contribute to the dynastic maelstrom of the Wars of the Roses. Richard’s fatal error had not only cost him his throne; it had bequeathed a century of strife to the kingdom he lost.
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Sources & Further Reading
Primary Sources Chronicle of Adam of Usk, 1377-1421. Edited and translated by C. Given-Wilson. Oxford: Clarendon Press, 1997. (Provides a contemporary, though pro-Lancastrian, account). Chronique de la traïson et mort de Richart Deux roy Dengleterre. Edited by Benjamin Williams. London: English Historical Society, 1846. (A French account, sympathetic to Richard). Froissart, Jean. Chronicles. Translated by Geoffrey Brereton. Harmondsworth: Penguin, 1968. Walsingham, Thomas. The St Albans Chronicle: The Chronica Majora of Thomas Walsingham, Vol. II, 1394-1422. Edited and translated by J. Taylor, W. R. Childs, and L. V. D. Owen. Oxford: Clarendon Press, 2011. The Domesday Book Online - Lincolnshire (www.domesdaybook.co.uk/lincolnshire1.html). For the entry for Brattleby ("Bratelbi").
Secondary Sources Given-Wilson, Chris. Henry IV. New Haven, CT: Yale University Press, 2016. Given-Wilson, Chris. The Royal Household and the King's Affinity: Service, Politics and Finance in England, 1360-1413. New Haven, CT: Yale University Press, 1986. Goodman, Anthony. John of Gaunt: The Exercise of Princely Power in Fourteenth-Century Europe. London: Longman, 1992. Mortimer, Ian. The Fears of Henry IV: The Life of England's Self-Made King. London: Jonathan Cape, 2007. (Though focused on Henry, its analysis of the 1399 usurpation is essential). Saul, Nigel. Richard II. New Haven, CT: Yale University Press, 1997. (The standard modern scholarly biography of Richard II). Somerville, Robert. History of the Duchy of Lancaster, Vol. 1: 1265-1603. London: Chancellor and Council of the Duchy of Lancaster, 1953. (The definitive institutional history of the Duchy). Tuck, Anthony. Richard II and the English Nobility. London: Edward Arnold, 1973. Victoria County History: A History of the County of Lincoln*, Vol. 2. Edited by William Page. London: Archibald Constable & Co., 1906. (For general context on feudal lordships in the county).