The year 1399 stands as a fissure in the landscape of English history. In a move of breathtaking political audacity, the anointed and crowned King Richard II was deposed, not by a foreign invader, but by his own cousin. When Henry Bolingbroke, Duke of Lancaster, seized the throne to become King Henry IV, he did more than simply replace one man with another. He shattered a centuries-old understanding of sacred kingship and was forced to construct a new model of royal authority—one founded not on uncontested inheritance, but on a precarious and constantly reinforced foundation of consent, military might, and masterful propaganda. His reign was not an inheritance; it was a project, a relentless campaign to legitimise the illegitimate. For the people of England, from the great lords of the realm to the tenants of a small Lincolnshire manor like Brattleby, the usurpation ushered in an age of profound uncertainty.
The Quarrel of Cousins: The Road to 1399
The roots of the 1399 crisis lay in the deeply dysfunctional relationship between Richard II and his powerful magnates, particularly his cousin, Henry Bolingbroke. Both were grandsons of the formidable Edward III, but there the similarities ended. Richard, who came to the throne as a boy of ten in 1377, developed a concept of monarchy that was absolutist, deeply infused with the divine, and intolerant of noble counsel that contradicted his own will. Henry, son of the enormously wealthy and influential John of Gaunt, Duke of Lancaster, was the epitome of the medieval magnate: a famed tournament champion, a crusader, and the holder of a vast network of estates that made him a king in all but name.
The first major rupture occurred during the crisis of 1386-88, when a group of powerful nobles, the Lords Appellant, sought to curb the king’s power and remove his unpopular favourites. Henry Bolingbroke, then Earl of Derby, was the youngest of the five Appellants. They successfully defeated the king’s forces at Radcot Bridge and forced Richard to execute his key supporters in the ‘Merciless Parliament’ of 1388. Richard never forgave this humiliation. For the next decade, he nursed his grievances, biding his time.
In the late 1390s, Richard struck back with a vengeance historians have termed his ‘tyranny’. He had the senior Appellants, the Duke of Gloucester and the Earls of Arundel and Warwick, arrested. Gloucester was murdered in custody at Calais, Arundel was executed, and Warwick imprisoned. He surrounded himself with a loyal affinity, raised a private army of Cheshire archers, and used the threat of treason charges to extort vast sums from his subjects.
The final, fatal miscalculation came in 1399. Following the death of his father, John of Gaunt, on 3 February, Henry Bolingbroke should have inherited the vast Duchy of Lancaster. Instead, Richard II, seeing an opportunity to destroy his rival forever, cancelled the legal documents that would have allowed Henry to receive his inheritance while in exile (he had been banished following a dispute with Thomas de Mowbray, another former Appellant). On 18 March 1399, the king’s council declared the Lancastrian estates forfeit to the Crown.
This was a shocking violation of the property rights that underpinned the entire aristocratic order. If the king could disinherit the greatest duke in the land, no nobleman’s patrimony was safe. Richard had united the aristocracy against him, not out of ideology, but out of fear. He then compounded his error by departing for a campaign in Ireland, leaving a kingdom seething with discontent and a perfect opportunity for his disinherited cousin to return.
The Usurpation: From Claimant to King
Around 4 July 1399, Henry Bolingbroke landed at Ravenspur on the Yorkshire coast with a few hundred followers. He issued a carefully worded proclamation. He had not come to claim the throne, he insisted, but merely to reclaim his rightful inheritance: the Duchy of Lancaster. This was a brilliant political move. It allowed anxious nobles to support him without immediately committing treason against an anointed king.
His most crucial early allies were the mighty Percy family of Northumberland—Henry Percy, 1st Earl of Northumberland, and his explosive son, Sir Henry ‘Hotspur’ Percy. With their support, Henry’s small band swelled into a formidable army as he marched south. Support for Richard collapsed with astonishing speed. Even the Duke of York, whom Richard had left as regent, defected to Henry’s cause.
When Richard II returned from Ireland in late July, he found his kingdom lost. He was cornered by Northumberland’s forces in North Wales and compelled to surrender at Flint Castle on 19 August. The meeting, as described by the chronicler Adam of Usk, was thick with tension. Henry reportedly told the king, “I have come to help you govern your kingdom better.” Richard was escorted to London, a prisoner, and lodged in the Tower.
Now Henry faced his greatest challenge: how to transform this successful rebellion into a legitimate monarchy. Simply murdering Richard and seizing the throne by conquest would brand him a tyrant. The solution was a masterpiece of legal theatre. A parliament was summoned in Richard’s name to meet at Westminster on 30 September. But before it met, a delegation was sent to the Tower, where they extracted a ‘voluntary’ abdication from the captive king. According to the official account, the Lancastrian Record, a smiling Richard willingly renounced his throne. The reality was surely one of duress and despair.
In parliament, the abdication was read out, followed by a long list of thirty-three ‘Articles of Deposition’, a catalogue of Richard’s alleged crimes against the laws and people of England. They accused him of ruling arbitrarily, extorting his subjects, executing nobles without due process, and declaring that “the laws were in his own mouth.”
With the throne now officially declared vacant, Henry Bolingbroke rose and made his claim. His words were ambiguous and brilliantly crafted to appeal to multiple justifications at once:
“In the name of the Father, Son, and Holy Ghost, I, Henry of Lancaster, challenge this realm of England, and the crown with all its members and appurtenances, as I that am descended by right line of the blood coming from the good lord King Henry III, and through that right that God of his grace hath sent me, with the help of my kin and of my friends, to recover it; the which realm was in point to be undone for default of governance and undoing of the good laws.”
He blended a weak hereditary claim (the Mortimer line through Edward III’s second son had a genealogically stronger claim), the right of conquest (“God of his grace hath sent me”), and the justification that he was saving a realm misgoverned by a tyrant. The assembled lords and commons acclaimed him as king. Archbishop Thomas Arundel led him to the empty throne. The usurpation was complete.
The Lincolnshire Connection: The Lancastrian Heartlands
For no county in England was Henry’s accession more significant than for Lincolnshire. Before 1399, Henry Bolingbroke was not just a distant national figure; he was the county’s pre-eminent magnate. The vast Duchy of Lancaster, his personal patrimony, had its administrative and symbolic heart in the region. The great Honour of Bolingbroke, centred on his birthplace at Bolingbroke Castle near Spilsby, was a sprawling complex of manors, rights, and loyal tenants that gave him immense regional power. Other key Lancastrian holdings included the castles at Sleaford and the important town of Boston.
When Henry asserted his right to his inheritance, he was speaking a language every Lincolnshire freeholder understood. The county was the bedrock of his affinity. Families like the Welbys, Tailboys, and Dymokes were staunch Lancastrian retainers. Sir Thomas Swynford of Kettlethorpe, Henry’s own half-brother (the son of John of Gaunt’s third wife, Katherine Swynford), was a key local supporter and was rewarded handsomely after the usurpation, serving as Sheriff of Lincolnshire.
Katherine Swynford herself, long-term mistress and eventual wife of John of Gaunt, is a quintessential Lincolnshire figure whose story is deeply entwined with the rise of the Lancastrians. Her tomb, and that of her daughter Joan Beaufort, remains a magnificent feature of Lincoln Cathedral, a testament to the family's deep roots and enduring power in the county. Henry IV’s accession transformed these local connections into the very foundation of the new royal dynasty. The loyalty once owed to the Duke of Lancaster was now loyalty owed to the King of England, and Lincolnshire became, in effect, a royal heartland.
For smaller communities like the Barony of Brattleby, a few miles north of Lincoln, the change would have been palpable. While the barony itself was held by other lords at this time, its inhabitants lived under the shadow-sm of the great Lancastrian power base in Lincoln. The local gentry and peasantry would have witnessed the sudden elevation of their regional duke to the national throne. Their allegiances, their rents, and the administration of justice would all have been affected by this seismic shift. The King was no longer a distant figure in Westminster; he was, by origin and affinity, one of them.
The Uneasy Crown: Rebellion and Consolidation
Becoming king was one thing; staying king was another. Henry IV’s reign was plagued by a series of rebellions, as his ‘constructed’ legitimacy was repeatedly tested by those who saw him as a usurper.
The first challenge came almost immediately. In January 1400, a group of Richard II’s loyalists, the Earls of Salisbury, Kent, and Huntingdon, launched the ‘Epiphany Rising’. Their plan was to capture and kill Henry and his sons at Windsor Castle during the Christmas festivities. The plot was foiled by a timely warning, and the conspirators were hunted down and summarily executed by local mobs. The rising failed, but it had a dark consequence. It almost certainly sealed Richard II’s fate. Around 14 February 1400, the deposed king died in captivity at Pontefract Castle. The official story was that he had starved himself to death through despair, but few believed it. Chroniclers like Adam of Usk and Thomas Walsingham hint strongly at murder by forced starvation. While politically necessary for Henry—it removed the figurehead for future plots—the suspicious death forever tarnished his reputation.
A far more persistent threat emerged from Wales. In September 1400, a dispute over land escalated into a full-blown national rebellion led by the charismatic Welsh squire, Owain Glyndŵr. Proclaimed Prince of Wales, Glyndŵr waged a brilliant guerrilla war that consumed Henry’s resources and attention for the better part of a decade. The rebellion was a running sore, a constant reminder of the fragility of Henry’s control over his own kingdom.
The most dangerous challenge, however, came from his own former allies: the Percys. Feeling inadequately rewarded for their king-making role in 1399 and disagreeing with Henry’s strategy against the Scots, the Earl of Northumberland and his son Hotspur rose in rebellion in the summer of 1403. They allied with the Scots and planned to join forces with Owain Glyndŵr. Their propaganda declared their intention to restore the rightful heir, the young Edmund Mortimer, Earl of March (the great-grandson of Edward III's second son, Lionel of Antwerp).
Henry IV acted with decisive speed. He intercepted Hotspur’s army near Shrewsbury before he could link up with the Welsh. The ensuing Battle of Shrewsbury on 21 July 1403 was a brutal and bloody affair, one of the first major English battles where longbowmen on both sides inflicted terrible casualties on each other. Henry IV fought in the front line, an inspiring and courageous leader, narrowly escaping death multiple times. His son, the fifteen-year-old Prince Henry (the future Henry V), was grievously wounded, struck in the face by an arrow. The royal forces triumphed, and Hotspur was killed. The victory was pivotal. Henry had faced down his most formidable English opponents on the battlefield and won, cementing his authority through trial by combat. Further Percy rebellions followed, but none posed the same existential threat as Shrewsbury.
The Art of Governance: Parliament, Piety, and Propaganda
Alongside military force, Henry employed more subtle tools to buttress his reign. Having come to the throne with the backing of Parliament, he was forced into a closer, more collaborative relationship with it than Richard II had ever countenanced. He was perennially short of money, needing parliamentary grants of taxation to fund his campaigns against the Welsh and the Scots, and to suppress rebellions. This dependency empowered the Commons, who used the "power of the purse" to demand concessions and influence policy, a key development in the evolution of England’s parliamentary monarchy.
Henry also cultivated a crucial alliance with the Church, personified by Archbishop Thomas Arundel, who had been exiled by Richard II and returned with Henry. Arundel became Henry’s chancellor and chief ideologue, preaching sermons that justified the deposition and presenting Henry’s rule as a restoration of good, orthodox governance after Richard’s perceived heresies and tyranny. In 1401, Henry’s government passed the statute De Heretico Comburendo ("On the Burning of Heretics"), the first law in England to prescribe burning at the stake for heresy. This was a clear signal to the Church hierarchy: the Lancastrian dynasty was a staunch defender of orthodoxy, a useful tool against the Lollard movement, and a worthy recipient of clerical support.
Finally, the new regime engaged in a sophisticated propaganda campaign. Official chronicles were commissioned to record the ‘correct’ version of the 1399 events, portraying Richard as a villain and Henry as the nation’s saviour. Prophecies were circulated, including one that claimed an eagle had appeared at Henry’s birth, foretelling his royal destiny. His personal piety was emphasised, contrasting with Richard’s extravagance. He was presented as an Englishman, fluent in the language of his people, in contrast to the Francophile culture of Richard’s court. Every action was designed to erase the stain of usurpation and weave a new narrative of legitimate, divinely-sanctioned kingship.
The Weight of the Crown
The constant struggle to secure his dynasty took a dreadful toll on Henry IV. From around 1405, he was afflicted by a recurring and debilitating illness that contemporary sources describe as a form of leprosy, though modern historians suggest it could have been a range of conditions from syphilis to severe psoriasis or heart disease. His face became disfigured, and bouts of sickness left him incapacitated for long periods. Many saw it as divine punishment for the deposition and suspected murder of Richard II, and for the execution of Archbishop Scrope of York after a failed rebellion in 1405.
As the king’s health declined, the political initiative passed to his sons, particularly the energetic Prince of Wales. The final years of the reign were marked by factional strife between the prince’s circle, which advocated for a more aggressive foreign policy, and the king’s more cautious councillors.
Henry IV died on 20 March 1413, aged about 46. According to legend, he died in the Jerusalem Chamber of the Abbot’s House at Westminster, thus fulfilling a prophecy that he would die in Jerusalem—a city he had always longed to visit on crusade. His body was not laid to rest with his predecessors at Westminster but, at his own request, beside the shrine of St Thomas Becket at Canterbury Cathedral, a final act of public piety.
Henry IV’s legacy is complex. He was a usurper who spent fourteen years battling to keep a crown he had seized through force and political cunning. His reign was one of turmoil, rebellion, and bloodshed. Yet, he succeeded in his primary objective: he passed the throne peacefully to his son. He forged a new model of cooperative governance with Parliament and established a dynasty that would rule England for over sixty years. However, the "original sin" of 1399 never washed away. The superior hereditary claim of the Mortimer line, passed to the House of York, provided the legal and dynastic justification for the catastrophic civil wars that would erupt two generations later—the Wars of the Roses. Henry IV built a house on sand, and while his brilliant son, Henry V, could shore it up with the glory of Agincourt, the foundations remained fundamentally unstable. His reign is a stark and compelling lesson in the difference between possessing a crown and truly securing it.
Sources & Further Reading
Primary Sources Adam of Usk. The Chronicle of Adam of Usk, 1377-1421. Edited and translated by C. Given-Wilson. Oxford: Clarendon Press, 1997. (A vital, first-hand account by a lawyer who witnessed many of the events). Walsingham, Thomas. The St Albans Chronicle: The Chronica Maiora of Thomas Walsingham, Vol. II, 1394-1422. Edited and translated by J. Taylor, W. R. Childs, and L. Watkiss. Oxford: Clarendon Press, 2011. (The major monastic chronicle of the period, generally hostile to Richard II but not uncritical of Henry IV). Rotuli Parliamentorum; ut et Petitiones, et Placita in Parliamento. Vol. III. London, 1783. (Contains the official parliamentary record of the deposition and Henry’s claim, known as the 'Lancastrian Record').
Secondary Sources Bean, J. M. W. The Estates of the Percy Family, 1416-1537. Oxford: Oxford University Press, 1958. (Provides context on the power of the Percy family). Given-Wilson, C. Henry IV. New Haven, CT: Yale University Press, 2016. (The most recent and authoritative scholarly biography). Harriss, G. L. Shaping the Nation: England 1360-1461. Oxford: Clarendon Press, 2005. (An excellent overview of the political and constitutional landscape). Mortimer, Ian. The Fears of Henry IV: The Life of England's Self-Made King. London: Jonathan Cape, 2007. (A highly readable and insightful biography focusing on the psychological pressures of Henry's reign). Saul, Nigel. Richard II. New Haven, CT: Yale University Press, 1997. (The definitive biography of Henry's predecessor, essential for understanding the reasons for the usurpation). A History of the County of Lincoln: Volume 2 (Victoria County History). Edited by William Page. London, 1906. (Provides historical context for the county of Lincolnshire and its प्रमुख families and landholdings). Weir, Alison. Katherine Swynford: The Story of John of Gaunt and his Scandalous Duchess. London: Jonathan Cape, 2007. (Details the deep Lancastrian connection to Lincolnshire through Katherine Swynford).