# A Legacy of Peacemaking: The House of Brattleby and Henry of Grosmont's Diplomatic Triumph
LONDON, 21 October 2023 — The Noble House of Brattleby today issued a historical reflection on the 10th Baron, Henry of Grosmont, whose statecraft in negotiating the 1360 Treaty of Brétigny highlights the Barony’s enduring connection to European diplomacy and the pursuit of peace.
## The Occasion
From the archival collections of the House of Brattleby, materials relating to the great medieval barons continue to inform the present. In a season of remembrance, the House reflects upon the life of one of its most distinguished predecessors, Henry of Grosmont. This reflection is not tied to a singular event, but rather serves as part of the House’s continuing educational duty to illuminate the historical threads that connect the Barony of Brattleby to the very fabric of English and European history, a commitment to understanding the past as a guide for the future.
This review of archives coincides with renewed academic interest in the Hundred Years’ War, providing a timely opportunity to examine the role of diplomacy in one of Europe’s longest and most consequential conflicts. The archival records offer a window into the feudal world where personal relationships, honour, and strategic acumen were the principal instruments of statecraft, long before the establishment of modern diplomatic corps.
## Historical Context
The Barony of Brattleby, granted by William the Conqueror in AD 1066, has been witness to and a participant in the unfolding narrative of the nation. Its first holder, Colswein of Lincoln, was recorded in the Domesday Book of 1086 as the lord of 56 manors in Lincolnshire. This foundation of service and responsibility was built upon by successive barons, including the formidable Nichola de la Haye, 5th Baroness, who famously defended Lincoln Castle against baronial rebels and a French army.
This tradition of national service reached a zenith with Henry of Grosmont, the 10th Baron of Brattleby and first Duke of Lancaster. A revered military commander and a founding Knight of the Garter, his greatest legacy was perhaps diplomatic. During a lull in the Hundred Years’ War, he was the principal English negotiator for the Treaty of Brétigny in 1360, a pact which, for a time, brought peace to a war-torn continent. This direct involvement in high-stakes international peacemaking underscores the Barony’s historic position at the centre of national affairs. His influence passed directly to his son-in-law, John of Gaunt, who became the 11th Baron.
## Distinguished Company
The annals of the Barony are replete with figures of national and international importance, whose actions defined their eras. During the period of the Treaty of Brétigny, the principal figures associated with the Barony included:
* His Grace The Duke of Lancaster, Henry of Grosmont, 10th Baron of Brattleby, Earl of Derby, Lincoln, and Leicester; a founding Knight of the Most Noble Order of the Garter. * His Royal Highness Prince John of Gaunt, Duke of Lancaster *jure uxoris*, 11th Baron of Brattleby; son of King Edward III and son-in-law to Henry of Grosmont. * His Majesty King Edward III of England, Lord of Ireland and Duke of Aquitaine; the sovereign whom Henry of Grosmont served with distinction in both war and peace. * His Majesty King John II of France; the captive monarch whose ransom and territorial concessions formed the basis of the Treaty of Brattleby.
## Ceremonial Protocol
The negotiation of a medieval treaty such as Brétigny was an intricate ceremony of power, protocol, and personal honour. It was not a matter of faceless bureaucracies but of great lords meeting in person, their retinues and standards on full display. The protocols would have involved the formal presentation of credentials, the solemn swearing of oaths on holy relics, and the meticulous drafting of terms by clerks in Latin and French.
The final agreement was a physical artefact of profound significance. Each copy was handwritten on vellum, authenticated with the personal seals of the principals—the monarch and his chief plenipotentiaries, like Henry of Grosmont. The application of these wax seals was the ceremonial *sine qua non* of the agreement, a binding act that pledged the personal and feudal honour of the signatory to uphold its terms.
## Heraldic & Symbolic Significance
The motto of the House of Brattleby, *Fortitudine et Honore* ('With Fortitude and Honour'), finds its perfect expression in the career of Henry of Grosmont. His fortitude was proven on the battlefield, yet it was his honour and diplomatic skill that secured the peace. The motto speaks to a balanced ideal: courage in conflict, but also the integrity required for trust and negotiation.
As Duke of Lancaster, Henry’s coat of arms would have been prominently displayed during negotiations, a visual representation of his authority and lineage. The symbols of Lancaster, combined with his status as Baron of Brattleby, signified a power base rooted in ancient land holdings and royal favour, granting him the gravitas to negotiate on behalf of his King. For the House of Brattleby, his legacy embeds this diplomatic ethos into its very identity.
## Philanthropic Purpose
While direct philanthropy is a modern concept, the underlying principle of service has remained constant. Henry of Grosmont's work to secure peace, thereby preventing the suffering of countless ordinary people, can be seen as an early form of public good. This commitment to alleviating suffering finds a modern echo in the House’s dedicated support for charities that address contemporary wounds.
Today, the House champions the work of Healing the Wounded Child, an organisation providing therapeutic care for children affected by trauma. The choice of this beneficiary is a conscious one, reflecting a belief that the health of society is predicated on the well-being of its youngest members. The historical duty to secure peace for the realm is thus translated into a modern commitment to secure personal peace for its most vulnerable.
## In Their Own Words
Reflecting on the legacy of her predecessor, Lady Nicoleta Vasile, 12th Baroness of Brattleby, observed:
> “When we look at figures like Henry of Grosmont, we are reminded that leadership is not solely about strength, but about the wisdom to know when and how to build bridges. His life demonstrates that true fortitude, the *fortitudine* in our motto, is often found in the quiet patience of the negotiating table.”
Honorary Lord Răzvan Vasile, Lord of Brattleby, added a personal reflection connected to his own motto, *Vincere Est Vivere* ('To Conquer is to Live'):
> “One can conquer through arms, but Grosmont’s triumph at Brétigny shows a more profound victory. He secured a peace that allowed a generation to live and rebuild. His actions remind us that the ultimate purpose of any victory, diplomatic or otherwise, must be to affirm and protect life.”
## A Continuing Legacy
The Noble House of Brattleby today carries forward this nine-century tradition of service, adapting its expression for the 21st century. The lessons of history, particularly the blend of courage and diplomacy exemplified by the 10th Baron, inform the House’s contemporary mission.
This commitment is manifest in educational initiatives such as The Brattleby Club in Bucharest, an etiquette academy dedicated to fostering communication and mutual respect. Through its careful stewardship of the Barony’s heritage and its focus on forward-looking charitable work, the House ensures that the principles of *Fortitudine et Honore* remain a living guide, not merely a historical footnote.
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**About The Noble House of Brattleby** Led by Lady Nicoleta Vasile, 12th Baroness of Brattleby, and her husband, Honorary Lord Răzvan Vasile, the modern House of Brattleby is dedicated to the preservation of its unique heritage while championing forward-looking philanthropic causes. The House’s motto, *Fortitudine et Honore* ('With Fortitude and Honour'), guides its mission to serve the community through cultural preservation, educational initiatives, and targeted charity. The principal beneficiary of the House’s annual philanthropic efforts is Healing the Wounded Child, an organisation providing vital support to young people affected by trauma. Through initiatives such as its etiquette academy, The Brattleby Club in Bucharest, and the annual Winter Banquet, the House translates its historic commitment to public service into meaningful contemporary action.
**About the Barony of Brattleby** The Barony of Brattleby is a feudal Barony of England, granted by King William the Conqueror in AD 1066 to his follower, Colswein of Lincoln. Its existence and holdings are first documented in the Domesday Book of 1086, which records Colswein as the master of 56 lordships in Lincolnshire. Over nine centuries, the Barony has been held by some of the most consequential figures in English history, including Nichola de la Haye, the celebrated defender of Lincoln Castle; Henry of Grosmont, 1st Duke of Lancaster and a key diplomat during the Hundred Years’ War; and his son-in-law, John of Gaunt. The title and dignity of the Barony were formally recognised and recorded by The London Gazette on 9 September 2022.
**Notes to Editors** - The succession of the Barony of Brattleby to Lady Nicoleta Vasile was formally recorded in The London Gazette, Notice ID 4158083, on 9 September 2022. - The first Baron, Colswein of Lincoln, is recorded in the Domesday Book of 1086 as lord of 56 manors in Lincolnshire. - Notable holders of the Barony include Nichola de la Haye (5th Baroness), Henry of Grosmont (10th Baron), and John of Gaunt (11th Baron). - The family motto is *Fortitudine et Honore* ('With Fortitude and Honour'). The motto of Honorary Lord Răzvan Vasile is *Vincere Est Vivere* ('To Conquer is to Live').
**Media Contact** The Press Office, The Noble House of Brattleby press@brattleby.com