In the mid-thirteenth century, the rhythm of life in a Lincolnshire manor like Brattleby was dictated by the seasons, the local assizes, and the will of one’s lord. The horizon, for most, was the spire of Lincoln Cathedral and the flat expanse of the fens. Yet, the mental and spiritual world of the English aristocracy was vast, stretching far beyond the North Sea to the battlefields of France and the holy places of the Levant. For the knightly class, participation in a crusade was the ultimate expression of piety, martial prowess, and social ambition. It was a perilous undertaking that could secure salvation in the next world and unparalleled prestige in this one. This nexus of faith, violence, and remembrance is perfectly embodied in the story of William Longespée the Younger, a great Anglo-Norman magnate with deep roots in Lincolnshire, whose crusade with King Louis IX of France in 1250 transformed his life into a heroic legend, echoing from the bloody banks of the Nile back to the very halls of the English gentry. His story demonstrates how the grand, international adventure of the crusade could elevate a regional lineage from a local concern into a European narrative of honour, faith, and violent sacrifice.
The Call to the Cross: A Lincolnshire Lord Prepares
By the 1240s, the crusading movement was entering a new phase. Jerusalem had been lost again to Khwarazmian forces at the Battle of La Forbie in 1244, a catastrophic defeat for the Christian states in the East. The shock of this loss reverberated across Europe. Responding to the crisis, the most pious monarch of his age, King Louis IX of France, took the cross in 1244 after recovering from a severe illness. His commitment was absolute, and he spent four years meticulously planning and financing what would become the Seventh Crusade—an ambitious expedition aimed not at Palestine directly, but at the heart of Ayyubid power in Egypt.
While this was a quintessentially French enterprise, the call to the cross was an international one. In England, King Henry III was Louis’s brother-in-law and, though he had taken a crusading vow himself, he was perpetually entangled in domestic disputes and financial shortfalls that prevented his participation. Yet, this did not deter his barons. For the English nobility, joining the French king’s crusade offered a path to spiritual merit and military glory that was temporarily unavailable under their own monarch. Among the most prominent to answer the call was William Longespée.
His name and lineage carried immense weight. He was the son of William Longespée, 1st Earl of Salisbury, the famous illegitimate son of King Henry II and Rosamund Clifford. This royal blood, though on the wrong side of the blanket, conferred enormous prestige. The elder Longespée had been a towering figure—a loyalist to King John, a witness to Magna Carta in 1215, and a veteran of the Battle of Lincoln in 1217. The younger William inherited not only his father’s martial spirit but also, through his mother Ela of Salisbury, a vast network of estates, including lands and influence in Lincolnshire. His wife, Idoine de Camville, was heir to the manor of Tattershall, securing for the family a major power base in the county, centred on the formidable Tattershall Castle.
For a lord like Longespée, preparing for crusade was a colossal undertaking that would have rippled through the local economy of his lands. Funds were the first necessity. He sold timber from his estates, levied scutage (a fee paid by tenants in lieu of military service), and may well have taken loans from Italian bankers or Jewish financiers. The revenues from manors across his sphere of influence, from Wiltshire to Lincolnshire, would have been channelled into this single, overriding purpose. Armies were not standing entities; they were raised by individual lords from their own households and tenants. Longespée assembled a retinue of knights, men-at-arms, and servants, a band of perhaps 200 Englishmen, all looking to him for leadership and pay. Blacksmiths in Lincoln and Boston would have been busy forging mail, plate defences for knees and elbows, and high-quality swords. He would have needed to procure warhorses—destriers—of immense strength and value, transport ships for his men and equipment, and provisions for a campaign that could last for years.
The St Albans chronicler Matthew Paris, our main English source for these events, records that Longespée formally took the cross at a council in Lyon in 1248. Before departing in July 1249, he sought the blessing of King Henry III, who gave him gifts and encouragement. According to Paris, Longespée also visited his mother, the formidable Countess Ela, who had retired as abbess of Lacock Abbey. This departure was a public and pious act, a severing of local ties for a sacred and universal cause. For the knights and freeholders of Lincolnshire, men who held land from magnates like Longespée, his departure was a momentous event. Some of their own sons may have joined his retinue, seeking fortune and honour. For them, the abstract idea of ‘the Holy Land’ was now given a very personal focus: their lord was going to fight for it.
From the Fens to the Nile Delta: The Journey East
Longespée and his English contingent sailed from southern England, likely Portsmouth or Sandwich, and made their way to join Louis IX’s main force. The French king had constructed a purpose-built port at Aigues-Mortes on the Mediterranean coast of France, a marvel of medieval logistics. From there, the vast crusading fleet, numbering in the hundreds of ships, set sail for the island of Cyprus, which was to be the staging ground for the invasion of Egypt.
The crusaders wintered in Cyprus from September 1249 to May 1250. This eight-month layover proved to be a trial of patience and politics. An army drawn from across Christendom was a melting pot of different languages, customs, and fierce feudal pride. Tensions soon emerged between the numerically dominant French and the smaller contingents, including Longespée’s English force. Jean de Joinville, the Seneschal of Champagne and a close companion of King Louis, provides a French perspective in his celebrated Life of Saint Louis. He records a significant dispute that arose when Longespée’s men captured a wealthy caravan of spices near Alexandria and refused to share the spoils with the French, arguing they had taken it by their own prowess. The king’s brother, Charles of Anjou, imperiously demanded a share, leading to a bitter quarrel. Feeling insulted and marginalised, William Longespée is said to have decamped and led his men to Acre for a time, a move bordering on insubordination.
This incident highlights the complex web of loyalties and rivalries at play. While united by a common religious cause, these were proud, ambitious warriors intensely jealous of their own honour and rights. It took the personal intervention of King Louis, renowned for his sense of justice, to smooth things over and persuade the valuable English knight to return to the fold before the invasion. For Longespée, the episode was a stark reminder that as an Englishman in a French-led army, his prestige was something he would have to constantly assert and defend, not just against the Saracens, but amongst his fellow Christians.
In late May 1250, the crusade fleet finally departed Cyprus, bound for Egypt. On 5 June, they made an amphibious landing at Damietta, a heavily fortified city at the mouth of the Nile. The Ayyubid garrison, taken by surprise and demoralised by the death of the Sultan as-Salih Ayyub, put up a feeble resistance before abandoning the city. The crusaders walked into Damietta almost unopposed. It was a stunning and deceptively easy victory, which filled the Christian army with a dangerous sense of overconfidence.
The Battle of Mansurah: Glory and Catastrophe
After securing Damietta, the crusaders waited for the annual Nile flood to subside before beginning their march south towards Cairo, the ultimate prize. The Ayyubid army, now under the command of the emir Fakhr al-Din ibn Shaykh al-Shuyukh, had regrouped at the fortified town of Mansurah (“The Victorious”), situated behind a branch of the Nile known as the Ashmum Canal. For weeks, the two armies faced each other across the water, the crusaders unable to cross and the Egyptians, now bolstered by the formidable Bahriyya Mamluks (elite slave soldiers), harassing them with skirmishers and Greek Fire.
Finally, a local informant revealed the location of a ford. On the morning of Tuesday, 8 February 1250, a vanguard force was dispatched to cross the canal and establish a bridgehead, securing the crossing for the main army. This elite force was commanded by King Louis’s hot-headed brother, Robert, Count of Artois. With him were the Knights Templar, the Knights Hospitaller, and William Longespée with his English contingent. The plan was clear: cross, secure the far bank, and wait for the king.
The crossing was a success. They surprised the Egyptian camp, routing the forces of Fakhr al-Din, who was killed in his tent as he was hastily arming himself. It was a complete victory for the vanguard. At this point, military discipline and the king’s explicit orders demanded they hold their position. But Robert of Artois, flushed with victory and eager for personal glory, saw an opportunity to destroy the enemy army and perhaps even seize Mansurah itself. Against the strenuous advice of the Grand Masters of the Templars and Hospitallers, and reportedly against the counsel of William Longespée, Robert ordered a charge. He taunted those who urged caution, accusing them of cowardice and being in league with the enemy.
The scene, as vividly recounted by both Joinville and Matthew Paris, was one of feudal pride overriding military sense. Matthew Paris, writing with palpable English patriotism, casts Longespée as the voice of reason. He reports Longespée turning to his standard-bearer, Robert de Vere, and saying, “Against the king’s commands we are advancing to our own destruction… but let us act as to die honourably.” Swept along by the reckless charge, the English and the military orders followed Artois’s banner as it plunged into the narrow, winding streets of Mansurah.
It was a fatal trap. The Mamluk forces, commanded by the brilliant future sultan Baibars al-Bunduqdari, had not fled but had simply fallen back into the town. They barricaded the streets, and from the rooftops, citizens rained down stones and projectiles on the trapped crusaders below. The Christian knights, encumbered in their heavy armour and unable to manoeuvre their horses in the constricted lanes, were cut off and slaughtered. Robert of Artois was killed, along with the Master of the Templars and hundreds of the best knights in the army.
In this maelstrom of chaos and death, William Longespée made his last stand. Matthew Paris provides a heroic, almost hagiographic, account of his final moments. He writes that Longespée, “breathing out his soul, sent many of his foes to hell.” Surrounded and vastly outnumbered, he fought with desperate courage. “When his horse was slain,” Paris continues, “and his own leg was broken, he still continued to fight on his knees, until at length, after being mangled with many wounds, he was overwhelmed with the stones thrown at him by the Saracens, and so, the martyr yielded up his spirit.” It was a vision of chivalric perfection: the loyal vassal, the fearless warrior, the Christian martyr, dying for his faith in a distant land, betrayed not by the enemy’s strength but by the folly of his own allies.
The Aftermath: Memory, Legacy, and Lincolnshire
The Battle of Mansurah was a disaster from which the Seventh Crusade never recovered. Though Louis IX and the main army eventually crossed and fought a desperate battle to a standstill, the Christian forces were crippled. Soon after, disease and starvation ravaged the camp, forcing a retreat that turned into a rout. King Louis himself was captured, and the remnants of his army were either killed or taken prisoner.
News of the catastrophe filtered back to England slowly, carried by merchants, pilgrims, and the few fortunate survivors. For the Longespée family and their dependents in Lincolnshire, the initial uncertainty must have been agonizing. When the full story arrived, it brought both profound grief and a strange, tragic kind of glory. The death of William Longespée was not reported as a simple casualty of war, but as a heroic martyrdom.
Matthew Paris’s Chronica Majora, written at the great abbey of St Albans, was instrumental in shaping this narrative. His account is a masterpiece of patriotic history, contrasting English bravery with French arrogance. Longespée becomes the quintessential English hero, a model of prudence and valour whose death was a noble sacrifice. This version of events would have been copied and disseminated, read aloud in monastic refectories and baronial halls across the country.
An even more powerful legend attached itself to his death. The annals of Lacock Abbey, the foundation established by his mother Ela, record that on the very day and hour that William was killed in Mansurah, Ela had a vision in her chamber. She saw a knight in full armour ascending into the heavens, where he was received by angels. She knew instantly it was her son, entering paradise as a martyr. This miraculous story sanctified William’s death, transforming a brutal military calamity into an event of sacred significance. It connected the violent geography of the Nile Delta directly with the spiritual geography of Heaven.
In Lincolnshire, in places like the castle at Tattershall or in the manors held by knights who had followed him, the story of William Longespée’s crusade would have become foundational to local identity and aristocratic memory. Returning squires or men-at-arms would have told and retold the story of the disastrous charge into Mansurah. They would have described the heat, the dust, the terror, and the final, heroic moments of their lord. The tale served multiple purposes. It was a cautionary tale about the dangers of pride (superbia), embodied by Robert of Artois. It was an inspirational model of the ideal knight’s death, fighting for Christ against overwhelming odds. And for the Longespée lineage, it was a source of immense, tragic prestige. While the crusade failed, their patriarch had achieved a martyr’s crown. His death cemented the family’s reputation for piety and courage on an international stage, a reputation that would have enhanced their standing and influence back home in England for generations. The memory of his sacrifice became a form of cultural capital, a story that linked the fields and fens of Lincolnshire to the epic struggle for the soul of Christendom.
Longespée’s adventure, ending in his violent death so far from home, powerfully illustrates how the crusading movement integrated even the relatively provincial corners of England into a wider European world. For the aristocratic houses of the thirteenth century, identity was not merely local; it was constructed through lineage, faith, and deeds of arms. By taking the cross, William Longespée physically transported himself to the centre of the Christian world’s most pressing military and spiritual enterprise. In dying there, he was transformed into a legend, and his story ensured that for those back in Lincolnshire, the distant lands of the crusade were not just a place on a map, but a sacred landscape where their own lords and kin had shed their blood for the honour of their name and the salvation of their souls.
Sources & Further Reading
Primary Sources
De Joinville, Jean. The Life of Saint Louis. Translated by M. R. B. Shaw in Chronicles of the Crusades. Penguin Classics, 1963. (Joinville provides a detailed, firsthand French perspective on the campaign and the character of the key participants). Paris, Matthew. Chronica Majora. Edited and translated by H. R. Luard. Rolls Series, 1872–83. (Paris's work is the principal English source, offering a highly patriotic account of Longespée's role and death). The Annals of Lacock Abbey, in W. L. Bowles and J. G. Nichols (eds.), Annals and Antiquities of Lacock Abbey*. J.B. Nichols and Son, 1835. (Contains the account of Countess Ela’s vision).
Secondary Sources
Jackson, Peter. The Crusades of 1239–41 and their Aftermath. Cambridge University Press, 2008. (Provides excellent context on the political situation in the Near East leading up to the Seventh Crusade). Lloyd, Simon. English Society and the Crusade, 1216–1307. Clarendon Press, 1988. (A seminal work on the social, financial, and religious motivations for English crusading). Madden, Thomas F. The New Concise History of the Crusades. Rowman & Littlefield, 2005. (A clear and accessible overview of the Seventh Crusade within the broader movement). Painter, Sidney. "The Crusade of Theobald of Champagne and Richard of Cornwall, 1239–1241." In A History of the Crusades, Volume II: The Later Crusades, 1189–1311, edited by R. L. Wolff and H. W. Hazard. University of Wisconsin Press, 1969. (While focusing on an earlier crusade, it sets the scene for English involvement). Sadler, John. The Second Barons' War: Simon de Montfort and the Battles of Lewes and Evesham. Pen & Sword Military, 2008. (Offers background on the English political landscape from which lords like Longespée emerged). Tyerman, Christopher. England and the Crusades, 1095–1588. University of Chicago Press, 1988. (The definitive study of England's centuries-long engagement with the crusading movement). Tyerman, Christopher. God's War: A New History of the Crusades*. Belknap Press, 2006. (A comprehensive and authoritative modern history of the entire crusading phenomenon).