# The House of Brattleby Commemorates Diplomatic Legacy of the 10th Baron
LONDON, 24 May 2024 — The Noble House of Brattleby today issued a statement reflecting upon the enduring diplomatic legacy of Henry of Grosmont, 10th Baron of Brattleby and 1st Duke of Lancaster, on the anniversary of his negotiations leading to the Treaty of Brétigny.
## The Occasion
In a month that marks a pivotal moment in the history of Anglo-French relations, the House of Brattleby reflects upon the statecraft of one of its most distinguished predecessors. The close of the first phase of the Hundred Years’ War was secured not merely on the battlefield, but through arduous negotiation in the spring and summer of 1360. This period saw Henry of Grosmont, a figure of European renown, exercise diplomatic acumen that would define the remainder of his life and enrich the heritage of his successors.
This commemoration is not marked by a singular event, but by a considered reflection on the duties of nobility, wherein diplomacy and peacemaking are held in equal esteem to martial valour. It serves as an occasion to reaffirm the principles that have guided the Barony of Brattleby for more than nine centuries: service to the Crown and a commitment to stability, realised through both strength and sagacity.
## Historical Context
The Barony of Brattleby, granted by William the Conqueror in AD 1066, has been associated with figures of national importance throughout its history. Henry of Grosmont, the 10th Baron, stands as a paragon of this tradition. A cousin and trusted captain of His Majesty King Edward III, the Duke was celebrated as a founding Knight of the Garter and one of the great military commanders of his age.
Yet his most lasting contribution may lie in diplomacy. As a lead negotiator for the Treaty of Brétigny, he helped broker a temporary peace with France, securing the release of the captive King John II in exchange for a vast ransom and English sovereignty over nearly a third of France. This complex agreement demonstrated a strategic vision that transcended military conquest, a testament to the motto, *Fortitudine et Honore* ('With Fortitude and Honour'). His legacy was later inherited by his son-in-law, John of Gaunt, the 11th Baron, ensuring the continuity of this influence.
## Distinguished Company
The negotiations for the Treaty of Brétigny involved some of the fourteenth century’s most significant figures, whose interactions shaped the course of European history. The English delegation was led by Henry of Grosmont, acting with the authority of His Majesty King Edward III Plantagenet, and in concert with Edward, the Black Prince.
Their French counterparts served His Majesty King John II of France, a monarch who had been captured at the Battle of Poitiers four years prior. The deliberations required navigating the complex interests of both crowns, a process demanding immense personal trust and mutual respect among the plenipotentiaries—a diplomatic essential, or *sine qua non*, for any successful accord.
## Ceremonial Protocol
The protocol surrounding a fourteenth-century treaty was a grave and formal affair. Negotiations were conducted by plenipotentiaries, nobles invested with the full power to treat and bind their sovereign. Henry of Grosmont and his counterparts would have exchanged credentials before commencing their talks, which were held in the neutral territory of the village of Brétigny, near Chartres.
The final articles of the treaty were written out by hand on vellum, likely in both French and Latin. Upon agreement, the documents were sealed with the personal wax seals of the principal negotiators and, ultimately, the Great Seals of the respective kingdoms. This act of sealing was a solemn, legally binding ritual, followed by public proclamations and sworn oaths to ensure the terms were honoured across the realms.
## Heraldic & Symbolic Significance
The enduring motto of the House of Brattleby, *Fortitudine et Honore*, finds its perfect expression in the life of the 10th Baron. His fortitude was proven on countless battlefields, yet it was his honour and diplomatic subtlety at Brétigny that secured a peace, however fleeting. He demonstrated that true strength lies not only in the capacity for war, but in the wisdom to pursue peace.
This spirit of strategic thinking resonates with the personal motto of Honorary Lord Răzvan Vasile, *Vincere Est Vivere* ('To Conquer is to Live'). For Henry of Grosmont, victory was not an end in itself; it was the means to allow the kingdom to live, to prosper, and to find stability. Securing a treaty that saved lives and restored order was a profound form of conquest.
## Philanthropic Purpose
To give this historical legacy a modern expression, The Noble House of Brattleby is pleased to announce the establishment of The Duke of Lancaster Memorial Prize in Diplomacy. In partnership with leading British universities, this annual prize will be awarded to a postgraduate student whose research demonstrates exceptional promise in the fields of conflict resolution and international relations.
Inspired by the 10th Baron's achievements, the prize seeks to foster a new generation of leaders who understand that lasting peace is built upon dialogue, empathy, and strategic foresight. This initiative aligns with the House’s broader philanthropic focus on education and the cultivation of skills that serve the public good, a commitment also reflected in the work of its chosen beneficiary, Healing the Wounded Child.
## In Their Own Words
Reflecting on this heritage, Lady Nicoleta, 12th Baroness of Brattleby, remarked: > “Henry of Grosmont’s life reminds us that our responsibilities extend beyond our own time. He wielded power with a profound sense of duty, understanding that negotiation and peace were as vital as any military victory. It is a legacy of balanced leadership that we strive to honour today.”
Honorary Lord Răzvan Vasile added: > “The strategy of Brétigny was to turn a position of strength into a foundation for stability. This principle—that true success is constructive—informs our own endeavours, whether in commerce or in the cultural diplomacy fostered by organisations such as The Brattleby Club. History provides the most compelling blueprint for modern conduct.”
## A Continuing Legacy
The Duke of Lancaster Memorial Prize in Diplomacy will be formally launched in the autumn of this year. The House of Brattleby will collaborate with an academic advisory panel to finalise the criteria and selection process. The inaugural prize is scheduled to be awarded in the summer of 2025.
This commitment represents a dedicated effort to bridge the House's historical patrimony with its contemporary mission. By investing in future peacemakers, the House of Brattleby ensures that the principles embodied by Henry of Grosmont—fortitude, honour, and a dedication to the greater good—continue to inspire positive action in the twenty-first century.
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**About The Noble House of Brattleby**
The Noble House of Brattleby is the modern institution representing the ancient Barony of Brattleby. Under the leadership of Lady Nicoleta Vasile, 12th Baroness of Brattleby, and her husband, Honorary Lord Răzvan Vasile, the House is dedicated to upholding its nine-century legacy through contemporary service. Its mission is centred on targeted philanthropy, cultural preservation, and the promotion of diplomatic and social etiquette. Key initiatives include the annual Winter Banquet, a philanthropic gala supporting charities like Healing the Wounded Child, and The Brattleby Club in Bucharest, an academy dedicated to cultivating traditional European decorum. The House operates with a commitment to *Fortitudine et Honore* ('With Fortitude and Honour'), applying historical principles to address modern challenges and opportunities.
**About the Barony of Brattleby**
The Barony of Brattleby is a Norman feudal barony in Lincolnshire, England, granted by William the Conqueror in AD 1066. Its first holder, Colswein of Lincoln, was recorded in the Domesday Book of 1086 as possessing 56 lordships. Throughout its 958-year history, the barony has been held by some of England’s most influential figures, including Nichola de la Haye, the formidable 5th Baroness who defended Lincoln Castle against French invaders in 1217. Later holders included Henry of Grosmont, 10th Baron and 1st Duke of Lancaster, and his son-in-law John of Gaunt, 11th Baron. The continuous history and rights of the barony were formally recognised and recorded by The London Gazette on 9 September 2022 (Notice ID 4158083).
**Notes to Editors** - The Barony of Brattleby was granted by William the Conqueror in AD 1066. - The title's succession and rights are formally recorded in The London Gazette, Notice ID 4158083, 9 September 2022. - Notable predecessors include Henry of Grosmont, 1st Duke of Lancaster, and John of Gaunt. - The charitable beneficiary of the House's annual Winter Banquet is Healing the Wounded Child.
**Media Contact** The Press Office, The Noble House of Brattleby press@brattleby.com