In the annals of English history, few moments carry the sheer weight of consequence as the spring of 1217. The kingdom, fractured and bleeding from a bitter civil war, stood on a precipice. Its detested king, John, was dead. His heir was a boy of nine. A French prince, with the backing of a formidable army and a majority of England’s own barons, occupied London and held sway over half the realm. The great prize of the North, the strategic fortress-city of Lincoln, was under siege. Within its castle walls, an elderly noblewoman, her hair as white as the chalk of the Lincolnshire Wolds, prepared for a final, desperate stand. For Nicola de la Haye, the hereditary castellan, surrender was not an option. For the Plantagenet dynasty, her defiance was everything. This is the story of that siege, a crucible where loyalty, endurance, and the fate of a nation were forged in the fire of conflict.
The Seeds of Conflict: A Kingdom Divided
To understand the crisis at Lincoln in 1217, one must first comprehend the calamitous reign of King John (1199–1216). The youngest son of Henry II, John inherited a vast but fraying Angevin Empire. Through a combination of military ineptitude, diplomatic blunders, and a rapacious, arbitrary style of governance, he lost Normandy and most of his continental possessions by 1204. To fund his failed attempts to reclaim them, he subjected his barons to unprecedented financial extortion, abusing feudal custom with crippling scutages, arbitrary fines, and the ruthless exploitation of his rights of wardship and marriage.
By 1215, the magnates of England, pushed beyond endurance, renounced their fealty and took up arms. At Runnymede, on 15 June, they forced John to seal Magna Carta, the "Great Charter," a revolutionary document that sought to place the king beneath the law. It was not, as later mythologised, a charter of universal liberty, but a feudal reaction against tyrannical overreach, asserting the rights of "free men" (a small minority of the population) against arbitrary royal power.
John, however, had no intention of abiding by its terms. Having sealed it under duress, he swiftly secured a papal bull from his ally, Pope Innocent III, annulling the charter. The result was the First Barons’ War. In their desperation, the rebel barons took a drastic and fateful step: they offered the crown of England to Prince Louis, the heir to the French throne. In May 1216, Louis landed in Kent with a powerful army, and the kingdom was torn asunder.
King John’s sudden death from dysentery at Newark Castle in October 1216 dramatically altered the political landscape. The royalist cause, which had seemed on the verge of collapse, now had a new figurehead: the nine-year-old Henry III. More importantly, it had a new leader. William Marshal, the Earl of Pembroke, a man in his seventies but still universally acclaimed as the greatest knight in Christendom, was appointed Regent. Alongside the papal legate, Guala Bicchieri, Marshal’s task was to salvage a kingdom for his young charge. His strategy was twofold: first, to co-opt the rebels’ most potent ideological weapon by immediately reissuing a modified version of Magna Carta, signalling a return to lawful governance; second, to defeat Prince Louis and his allies in the field. By the spring of 1217, the military focus of the entire war had converged on a single point: Lincoln.
Lincoln: The Key to the North
Since its foundation as the Roman legionary fortress of Lindum Colonia, Lincoln had been a place of immense strategic importance. It stood at the crossroads of two of England’s great arteries: Ermine Street, the Roman road running north from London to York, and the Fosse Way, which cut diagonally across the country from the south-west. Its commanding position atop a steep escarpment overlooking the River Witham gave it control of traffic both by land and water, making it the political, economic, and military capital of the eastern Midlands.
Its value was not lost on William the Conqueror. Following the Norman Conquest, he ordered the construction of a formidable motte-and-bailey castle in 1068, one of the very first to be built in his new kingdom. The Domesday Book of 1086 records the demolition of 166 houses to clear the site in the south-west corner of the old Roman upper city, a brutal testament to the castle’s importance in suppressing the local populace. Cared for and expanded by subsequent monarchs, by the early 13th century Lincoln Castle was a powerful stone fortress, with a curtain wall, a massive keep on its original motte, and a second, smaller motte (the ‘Lucy Tower’). It was a royal stronghold, the administrative centre for the shire, and an almost impregnable symbol of royal authority.
For the warring factions of 1217, control of Lincoln was vital. For Prince Louis and the rebel barons, its capture would consolidate their hold on the North and East, starve the royalist heartlands in the Midlands of support, and provide a secure base from which to launch a final assault on the remaining Plantagenet strongholds. For William Marshal and the boy-king’s dwindling supporters, holding Lincoln was a matter of survival. If it fell, the royalist cause in the North would be extinguished.
The Lady of the Castle: Nicola de la Haye
The defence of this critical fortress lay not with a hardened military commander, but with a woman well into her sixties. Nicola de la Haye was a figure of extraordinary resilience and a member of a prominent Lincolnshire family. The constableship of Lincoln Castle, an inheritable office, had come to her through her father, Richard de la Haye. She had shared the duty with her husband, Gerard de Canville, a staunch supporter of King John during his rebellion against his brother Richard I.
Nicola’s personal loyalty to John was forged over decades of service. She and her husband had held Lincoln for John during the wars of the 1190s. After Gerard’s death, Nicola continued as castellan, proving her worth time and again. In 1216, during the early stages of the Barons’ War, Lincoln was first besieged. Nicola, despite her advanced age, successfully defended the castle against the rebel forces. When King John himself visited Lincoln in late September 1216, just weeks before his death, he personally confirmed her in her post. The chronicler of The History of William Marshal records that the king was so impressed by her loyalty that he entrusted her with the command, a charge she accepted with the grave declaration that she would defend it to the death.
Now, in the spring of 1217, she faced her greatest test. The forces arrayed against her were overwhelming. A Franco-rebel army of some 600 knights and 1,000 infantry, commanded by the Comte du Perche, Gilbert de Clare, and Robert Fitzwalter (the self-styled ‘Marshal of the Army of God’), stormed the city of Lincoln. The city’s lower bailey fell quickly, but Nicola and her small garrison retreated into the impregnable upper fortress. The great siege began.
The Siege Begins: A Month of Extreme Pressure
For over a month, the castle was subjected to relentless assault. The French, masters of siege warfare, brought their formidable engines to bear. Huge stones, hurled from mangonels and trebuchets, crashed against the curtain walls day and night. The psychological strain was immense. The noise was deafening, a constant, percussive reminder of the enemy’s power and determination. Sleep was impossible, nerves were frayed. For the defenders, time became an enemy, each passing day draining their finite resources of food, water, and morale.
The besiegers also began the laborious and terrifying process of mining. Sappers tunnelled beneath the outer barbican, seeking to collapse its foundations. To the garrison, the faint, subterranean sounds of digging would have been a source of constant dread. Hunger, as the user brief suggests, became a weapon. The Franco-rebel army controlled all access to the city, and the blockade was absolute. Rations within the castle walls would have been strictly controlled, dwindling with each passing day. The physical and mental exhaustion on Nicola de la Haye and her men is difficult to overstate. Yet, with a courage that astounded her contemporaries, she refused all demands to surrender. Her defiance was a profound declaration of power, a message sent out from the beleaguered fortress that the spirit of the royalist cause, though cornered, was not broken.
The Regent's Gamble: William Marshal's March
News of Nicola’s desperate plight reached William Marshal at the temporary royal court in Nottingham. The Regent faced a terrifying choice. His own army was significantly smaller than the force besieging Lincoln, numbering perhaps 400 knights and a few thousand foot soldiers and crossbowmen. A direct confrontation was a huge risk; defeat would not only doom Lincoln but would almost certainly mean the end of Henry III’s reign. Many of his advisers urged caution, suggesting a diversionary attack on London to draw Prince Louis away.
But Marshal, the old warrior, understood the strategic and symbolic importance of the moment. He also felt a knightly obligation to relieve the valiant Nicola de la Haye. Gathering his council at Newark-on-Trent, he made his decision: they would stake everything on a single, audacious march to relieve Lincoln.
The army he assembled was a roll-call of the great loyalist families. It included the formidable Ranulf de Blondeville, Earl of Chester; William Longespée, Earl of Salisbury (the king's illegitimate uncle); and the ruthless mercenary captain, Falkes de Bréauté. Crucially, the papal legate, Guala Bicchieri, accompanied them. On the morning of the march, Guala formally excommunicated Prince Louis and his adherents, and declared the royalist campaign a holy crusade, granting a remission of sins to all who fought for the boy-king. White crosses were stitched onto the tunics of Marshal’s soldiers. This masterstroke of political theatre transformed the campaign. They were no longer merely soldiers fighting a civil war; they were crusaders, marching under God’s banner to cleanse the land of foreign invaders and excommunicated rebels. Morale soared.
The 'Lincoln Fair': The Battle of 20 May 1217
On 19 May, Marshal’s army reached the town of Stow, ten miles north-west of Lincoln. The following morning, Saturday 20 May, they advanced up the escarpment and deployed on the high ground to the north of the city. The rebel commanders, confident in their numerical superiority and the city’s defences, made a fatal error. Instead of marching out to meet Marshal on the open field, they decided to continue the siege while sending a detachment to hold the city’s North Gate against the royalist advance. The Comte du Perche is said to have arrogantly dismissed the approaching army, boasting he would "weigh" the English lords against his own.
Marshal’s tactical genius now came to the fore. While the main body of his army advanced on the North Gate, he gave Falkes de Bréauté a critical mission. Falkes, a man of brutal efficiency, took his entire contingent of household troops and crossbowmen on a wide flanking manoeuvre to the west of the city. Guided by someone with intimate local knowledge, they found a sally port in the castle’s outer wall that the besiegers had failed to properly block. Under covering fire from Nicola’s own crossbowmen on the battlements, Falkes and his men burst through the opening and into the castle precincts.
Having secured a foothold, Falkes immediately threw open the castle's West Gate, which faced into the city. At the same time, Marshal’s main force, having smashed its way through the North Gate, began to pour into the city’s narrow, winding streets. The battle had begun.
What followed was not a pitched battle but a chaotic, brutal street-fight. The rebel forces were caught completely by surprise, trapped between Marshal’s army advancing from the north and Falkes’s troops emerging from the west. The narrow, cobbled lanes turned into killing grounds. The royalist crossbowmen, many of whom Falkes had positioned on rooftops, rained down a deadly hail of bolts on the panicked French knights and their allies below.
The turning point came with the death of the rebel commander. The Comte du Perche, fighting fiercely near the cathedral, was surrounded. Refusing to surrender, he was killed when a sword-thrust went through the eye-slit of his helmet. With their leader dead, the rebel command structure collapsed. Panic set in. Knights and soldiers shed their armour and tried to flee, desperate to escape the slaughter. The royalists, sensing victory, surged through the city. The chroniclers’ name for the battle, La Foire de Lincoln—the Lincoln Fair—was a grimly ironic jest, mocking the rebels who had been so comprehensively caught and "sold" on a market day.
The rout was total. Many rebels were cut down as they tried to flee south towards the only escape route, the Bargate. Others, including nearly all the leading English barons, were captured. The city itself suffered terribly. In the aftermath, the victorious and vengeously pious royalist army, seeing the citizens as collaborators, subjected Lincoln to a thorough and merciless sack.
Aftermath and Legacy
The Battle of Lincoln was the decisive engagement of the First Barons’ War. It shattered Prince Louis’s military power and morale. He lifted his own siege of Dover and retreated to his London stronghold. A few months later, a final naval victory for the English off the coast of Sandwich, led by Hubert de Burgh, cut off Louis’s supply lines to France for good. By the Treaty of Lambeth in September 1217, Louis agreed to renounce his claim to the English throne and withdraw from the kingdom.
The victory at Lincoln saved the Plantagenet dynasty. More than that, it secured the future of Magna Carta. In victory, William Marshal’s government wisely pursued a policy of reconciliation. The rebel barons were allowed to buy back their lands, and in November 1217, Magna Carta was reissued for a second time, this time alongside a new Charter of the Forest. By making the charter their own, the new government ensured its survival, entrenching the principle that the king was subject to the rule of law.
Nicola de la Haye emerged from the siege a hero. She was confirmed in her offices and showered with praise. Though she was compelled to relinquish the shrievalty and constableship to the powerful Earl of Salisbury a few years later—a political necessity to reward the king’s powerful uncle—she did so with honour and retained her family lands. She died around 1230, a woman who had twice defended Lincoln Castle and, in doing so, had held the fate of a kingdom in her hands.
The Barony of Brattleby in the Age of John and Henry III
Just a few miles north of the dramatic events in Lincoln lay the small manor and Barony of Brattleby. While its inhabitants were not direct participants in the siege, their feudal lord was deeply embroiled in the national conflict, albeit on the opposite side to Nicola de la Haye. In the early 13th century, Brattleby was held by the Lovel family, who in turn held it as tenants of the Bishop of Lincoln. The Domesday Book of 1086 had recorded Brattleby as a possession of the Bishop, a quiet agricultural estate. By the reign of King John, this feudal arrangement placed its lord, William Lovel, in a complex position.
Like many English landholders, William Lovel was caught up in the baronial rebellion against King John. Records from the Patent and Close Rolls show that Lovel was numbered among the rebels. His lands, including those in Lincolnshire, were declared forfeit to the crown and were granted, at least temporarily, to loyalists. This detail provides a fascinating local counterpoint to the events at Lincoln. While Nicola de la Haye was holding Lincoln Castle for the king, the lord of nearby Brattleby was fighting against him. It is a stark reminder that the civil war divided not just the kingdom, but shires, towns, and even neighbouring manors. William Lovel, like many others, ultimately made his peace with the new government of Henry III after the Battle of Lincoln, and his lands were restored under the terms of the general amnesty. The struggle for Lincoln was not just a grand clash of armies, but the sum of countless local loyalties and grievances, like those that animated the lord of Brattleby.
Conclusion
The Siege of Lincoln in 1217 was more than just a military engagement; it was a defining moment in English history. It was a test of endurance and will, personified by the resolute figure of Nicola de la Haye, whose refusal to surrender in the face of overwhelming odds created the window of opportunity for the royalist cause to rally. It was the stage for the military genius of William Marshal, whose final great victory secured the throne for Henry III and ended the threat of a French conquest. And ultimately, it was the conflict that ensured the survival of Magna Carta, transforming it from a failed peace treaty into the foundational document of English constitutionalism. The echoes of the clash of steel in Lincoln’s narrow streets, and the quiet defiance of its indomitable castellan, reverberate still.
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Sources & Further Reading
Primary Sources:
Domesday Book: A Complete Translation. (London: Penguin, 2003). For entries pertaining to Lincoln and Brattleby (Linc. 7, 3 & 7, 72). The History of William Marshal (L'Histoire de Guillaume le Maréchal), ed. A.J. Holden, trans. S. Gregory. (London: Anglo-Norman Text Society, 2002–2006). A key contemporary source, likely commissioned by Marshal’s family. Roger of Wendover, Flores Historiarum (Flowers of History), in Matthew Paris’s English History, trans. J. A. Giles (London: H. G. Bohn, 1852). Provides a detailed, though sometimes biased, chronicle of the period. Patent Rolls of the Reign of Henry III Preserved in the Public Record Office, 1216-1225. (London: HMSO, 1901). Contains official royal records of land grants and forfeitures, including those relating to rebel barons like William Lovel.
Secondary Sources:
Asbridge, Thomas. The Greatest Knight: The Remarkable Life of William Marshal, the Power Behind Five English Thrones. (London: Simon & Schuster, 2014). A superb modern biography. Carpenter, David. The Minority of Henry III. (London: Methuen, 1990). The definitive academic account of this period. Carpenter, David. Magna Carta. (London: Penguin Classics, 2015). Provides excellent context for the political background of the Barons' War. Crouch, David. William Marshal: Knighthood, War and Chivalry, 1147-1219. 3rd ed. (London: Routledge, 2016). Johns, Susan M. Noblewomen, Aristocracy and Power in the Twelfth-Century Anglo-Norman Realm. (Manchester: Manchester University Press, 2003). Contains analysis of powerful women like Nicola de la Haye. Morris, Marc. King John: Treachery, Tyranny and the Road to Magna Carta. (London: Hutchinson, 2015). A compelling and accessible narrative of John’s reign. The Victoria History of the County of Lincoln, Vol. II, ed. William Page. (London: Archibald Constable, 1906). Provides detailed local history, including feudal tenures of manors like Brattleby. Warren, W. L. King John. (New Haven, CT: Yale University Press, 1997). The classic scholarly biography.