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Curators pick traitors!

Inside Story Issue 60

With the new series of BBC’s ‘Celebrity Traitors’ gracing our screens this autumn, what better time to expose some of our own? Chief Historian Tracy Borman presents a short, dark history of treason, while our faithful curators and researchers each nominate their favourite palace-connected villain.

Tracy Borman headshots outside the Towver of London

In the year 1348, a devastating epidemic swept across England. The bubonic plague – better known as the Black Death – wiped out as much as half of the population and sparked years of economic hardship. The same year, another – apparently far less significant – event took place. A Hertfordshire man named Sir John Gerberge was convicted of treason for falsely imprisoning William de Boletisford and taking his horse, refusing to release him until he coughed up £90. A contingent of powerful barons protested to King Edward III that Sir John was no traitor and that a new law was required to more accurately define what treason was. The result was the Treasons Act of 1352. This stipulated that to kill, or attempt to kill the monarch, to violate the monarch’s immediate family, or to wage war against the Crown or state was treason. The definition has held true for almost 700 years, and the Act remains in force today.

Header image: The Meeting of Thomas More with his daughter after his sentence of death by William Frederick Yeames, 1863. More was accused of high treason for refusing to accept Henry VIII as Supreme Head of the Church of England © Historic Royal Palaces. 

Edward III’s Act changed the relationship between Crown and people forever. Over the centuries, monarchs used it to punish their enemies, strike fear into their subjects and wield sovereign power. The traditional punishment for treason was to be hanged, drawn and quartered, which proved an effective deterrent for most would-be traitors. But the execution site outside the Tower of London still enjoyed a roaring trade, particularly during the Tudor period when close favourites, ministers and even wives found themselves on the wrong side of the law (and axe). Two of Henry VIII’s wives (Anne Boleyn and Catherine Howard) were convicted of treason and beheaded at the Tower.

Painting of Thomas Cranmer (1489-1556), Archbishop of Canterbury-at the Traitor's Gate'

Image: Thomas Cranmer at the Traitor's Gate after Frederick Goodall, 1856. The Archbishop of Canterbury was committed to the Tower in 1553 and charged with high treason for supporting the attempt to place the Protestant Lady Jane Grey on the throne © Historic Royal Palaces. 

Throughout history, traitors have been big box office. Tens of thousands of people descended on Tower Hill to watch the latest execution. Football-style stands were built, souvenirs and snacks sold, and people even clung to the rigging of ships on the Thames to get a view as the likes of Thomas Cromwell, the Duke of Monmouth and Lord Lovat met their grisly ends. Then in 1649, the Treasons Act that had been used by the Crown as a means of control for 300 years was suddenly turned against it when King Charles I was declared a traitor to the state and executed outside the Banqueting House on Whitehall. The last execution for treason at our palaces was that of Second World War spy Josef Jakobs, by firing squad at the Tower in 1941.

But how many of these traitors were, in reality, 100% faithful? Anne Boleyn’s only real crime was not giving Henry VIII a son, whereas poor Walter Raleigh (executed for treason in 1618) had done nothing worse than fail to find the fabled City of Gold, which didn’t exist anyway! It seems treason, like beauty, has always been in the eye of the beholder.

I nominate … Mary, Queen of Scots

Tracy Borman, Chief Historian

Oil paining of  Mary Queen of Scots by Francois Clouet c1560

Image: Mary, Queen of Scots by François Clouet, c1560

‘Well, what do you think of your Queen of Scotland?’, Elizabeth I ranted to a hapless ambassador after hearing of Mary, Queen of Scots’ treasonous activities. ‘With black ingratitude and treachery she tries to kill me who so often saved her life.’ For the best part of three decades, the Scottish queen had been a thorn in Elizabeth’s side. As a staunch Catholic with a strong blood claim to the English throne, she had been at the heart of numerous plots to oust Elizabeth and take her crown. Even after she became the Queen of England’s prisoner in 1568, the danger persisted. Then in 1586, Elizabeth’s spymaster Sir Francis Walsingham uncovered Mary’s involvement in the Babington Conspiracy. She and the plotters had been corresponding in secret – or so they believed. But Walsingham had intercepted every letter, including the one that sealed Mary’s doom. Her order to ‘set the six gentlemen [assassins] to work’ made a lie of all the sickly-sweet missives she had sent to her cousin Elizabeth over the years, assuring her of her loyalty and devotion. Mary was executed at Fotheringhay Castle in February 1587 and has gone down in history as a tragic heroine. Don’t believe a word of it: the Queen of Scots was 100% traitor.

With black ingratitude and treachery she tries to kill me who so often saved her life.

Elizabeth I

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A painting of Lady Jane Grey, also known as the Nine Days' Queen, who was imprisoned in the Tower of London and executed in February 1554 having been found guilty of high treason

Image: Lady Jane Grey (1537-54), also known as the Nine Days' Queen, was imprisoned in the Tower of London and executed in February 1554 having been found guilty of high treason © Historic Royal Palaces. 

Executions at the Tower of London

Join Tracy Borman as she explores some of the most notorious executions at the Tower of London - and discover the deadly consequences of being branded a traitor!

I nominate … Robert Dudley, Ist Earl of Leicester

Minette Butler, Assistant Curator (Public History)

Oil Painting of Robert Dudley by Steven van der Meulen c1565.

Image: Robert Dudley, first Earl of Leicester by Steven van der Meulen, c1565. (Yale Center for British Art, Paul Mellon Fund)

To many in Tudor England, Robert Dudley was a notorious traitor. Yet he managed to dodge accusations throughout his life. Swept up in his father’s plot to crown Lady Jane Grey, Dudley was thrown in the Tower by Mary I in 1553. Though he left the fortress with his head intact, Dudley continued to attract suspicion as the powerful favourite of Elizabeth I. He was long rumoured to be her lover – an accusation she always denied. But Dudley was her near-constant companion and a much-discussed marriage candidate. One problem? He was already married. When Amy Dudley (née Robsart) was found dead at the bottom of a staircase in 1560, suspicion soon fell on her ambitious husband. Dudley was away at the time, and Amy’s death was ruled an accident. However, his conveniently single status encouraged virulent rumours at home and abroad. Queen Elizabeth never married Dudley, but their attachment continued to create scandal. His secret marriage to Lettice Knollys enraged the Queen, whilst enemy whispers warped Dudley into a conniving villain who exploited his position for power and wealth. Favourites like Dudley played a dangerous game, risking everything to stay close to the Crown. Despite all the rumours, lies and love triangles, Elizabeth trusted her faithful ‘sweet Robin’ until his death in 1588.

I nominate … Simon Fraser, 11th Lord Lovat

Jemima Hubberstey, Research Officer

Simon Lord Lovat in print made by William Hogarth 1746

Image: Simon Lord Lovat in a print made by William Hogarth, 1746. (Yale Center for British Art, Gift of Suzanne and William H Speaker).

Simon Fraser, 11th Lord Lovat, the last man in Britain to be beheaded, died on Tower Hill in 1747 for his involvement in the failed 1745 Jacobite rebellion, led by Charles Edward Stuart (‘Bonnie Prince Charlie’) to overthrow George II. Following the Jacobite defeat at Culloden, Lovat, aged 80, was captured and brought to the Tower. While Lovat was confined at Fort Augustus, Colonel Joseph Yorke met him and recalled, ‘he has begg’d to make [the journey to London] by land, for he says the sea would certainly kill him […] as nobody wished him any other Death than the axe.’ Never without a quip, when Lovat was finally brought to the Tower, according to the writer, Horace Walpole, the wily old highlander boasted that if it was not for his age, he should have escaped with ease.

Throughout his trial, Lovat remained belligerent. Elizabeth Yorke, whose father conducted the trial as Lord High Steward, observed that Lovat was ‘complaining of blindness & deafness yet reading without spectacles & hearing when convenient.’ Walpole was more critical: Lovat ‘behaved ridiculously, joking and making everybody laugh even at the sentence’. Lovat certainly had his critics, but I secretly admire his roguish spirit in refusing to go quietly!

I nominate ... Colonel Thomas Blood

Caroline Wilhelmsson, Assistant Curator (Historic Buildings)

Carreras cigarette card depicting Colonel Thomas Blood (1618-80)

Image: Colonel Blood depicted on an early 20th-century cigarette card © Historic Royal Palaces. 

Thomas Blood is probably best remembered for trying to steal the Crown Jewels in 1671, yet – astonishingly – escaping punishment. Not only did Charles II pardon him but also restored his lucrative estates in Ireland! Some say that the King found Blood entertaining, or amusingly audacious. However, stealing the Crown Jewels was only the last of many treasonous acts. Blood was a dissenting Anglo-Irish army officer. When the First Civil War started in 1642, he initially supported the Royalists. He later switched sides to follow Cromwell. As a reward, he received land in Ireland and was made a justice of the peace in 1653.

Following the Restoration, his estates were confiscated. After this setback, Blood embarked on a not terribly successful criminal spree, aided by fellow disgruntled Cromwellians. Under Blood’s leadership, they plotted to storm Dublin Castle and kidnap and murder the Lord Lieutenant of Ireland. When all these failed, they joined an uprising against the Crown in Scotland (another fail!). Blood fled to the Netherlands (then at war with England) in 1666, proving himself influential and dangerous – a good reason, perhaps, for the King deciding to buy his loyalty. Finally – a win for Blood!

I nominate ... King Charles I

Alden Gregory, Curator (Historic Buildings)

Charles I (1600-1649), The young prince wears a russet satin gown with hanging sleeves, trimmed with velvet, embroidered with gold thread and lined with lynx fur.   Sir Anthony van Dyck, Royal Collection Trust/© Her Majesty Queen Elizabeth II

Image: Charles I by Anthony van Dyck, 1635-6. (© Royal Collection Enterprises Ltd 2026 | Royal Collection Trust) On public display in the Queen's Drawing Room for visitors to Windsor Castle.

How can a king be a traitor? How can a man who many believed was second only to God and whose law the country lived by  be put on trial? These were the questions facing the Parliamentarians who sat in judgement over Charles in January 1649. Despite the dubious legality of the proceedings the outcome was inevitable. Guilty. On 30 January, having bid a tearful farewell to his children, he was executed outside Banqueting House.

Charles’ relationship with Parliament was as frosty as that cold January from the start. His arrogance, his fondness for expensive art and even more expensive foreign wars, and his marriage to a Catholic all eventually led to civil war. It was a war so awful that some 200,000 people died, and so it was as a war criminal that Charles stood trial, accused of treason against his own people, responsible for the deaths of so many. The extent of his guilt continues to divide. For some he is the symbol of autocratic monarchy, for others a martyr. He was judged to be a traitor to his people, but he remained faithful to his beliefs. His legacies are therefore difficult to pin down, but politically these events paved the way for our constitutional monarchy, whilst culturally his art-collecting formed a basis for our nation’s collections.

Photography of a young woman with a hand-held mirror looking at ceiling painting at Banqueting Hall, Banqueting House.

Banqueting House Open Days

Sunday 01 November and Sunday 20 December 2026

Experience four centuries of art, architecture and history on an Open Day at Banqueting House, the site of Charles I’s execution; pre-booking required.

I nominate ... Queen Mary II

Holly Marsden, Assistant Research Curator

Black and white engraving of King William III (1689-1702) and Queen Mary II (1689-94). The King wears robes of state; the Queen a jewelled gown with pearls. Above them are putti supporting a crown and below is the royal coat of arms.

Image: Engraving of King William III (1689-1702) and Queen Mary II (1689-94) © Historic Royal Palaces. 

Is there anything more traitorous than deposing your own father?

In 1688, Mary II agreed to overthrow her father, James II, in the ‘Glorious Revolution’. Her justification? Mary was a staunch Protestant, married to a Prince of Orange, whereas her father had converted to Catholicism before succeeding to the English throne in 1685. In 1688, the consort queen and Mary’ s stepmother, Maria Beatrice of Modena, gave birth to a baby boy – a potential Catholic heir. Protestant panic ensued, and seven bishops wrote ( in code ) to Mary and her husband William asking them to take the throne from James.

Even before the birth of Charles Francis Edward Stuart, nicknamed ‘the old pretender’ by some, Mary and her father had exchanged polite letters in which they discussed their religious differences. Mary now saw it as her duty to save England from Catholicism. After William’ s fleet arrived at Torbay in Devon on 5 November, 1688, King James, and his family fled into exile in France, leaving William and Mary the English throne. Heartbroken by what he regarded as his daughter’ s treachery , and that of her sister Princess (later queen) Anne, James did not even attend Mary’ s funeral in 1694. However, her actions grieved Mary for the rest of her short life. She wrote frequently that unfortunate events or bad feelings were her punishments and tests from God for her part in the Revolution.

I nominate ... Arabella Stuart

Alice Blows, Curator (Historic Buildings)

A painting of a woman wearing a black Elizabethan gown with an elaborate ruff. A small dog sits on her lap.

Image: Lady Arbella Stuart attributed to Robert Peake, 1605. (National Galleries of Scotland collections).

Surely not! Arbella is better known as one of the more poignant figures associated with our palaces. A great-granddaughter of Henry VII, she possessed one of the strongest hereditary claims to the English throne during her lifetime.

Well educated and with literary interests, Arbella enjoyed a privileged lifestyle, spending time at Hampton Court Palace and other royal residences, However, in 1610 she secretly married William Seymour, a descendant of Henry VII, without the permission of James I. The marriage united two dynastic claims, raising fears that Arbella and William could become the focus of political opposition. Conveniently branded as a traitor, Arbella was placed under house arrest.

In 1611, she attempted escape with her husband. William reached Flanders safely but sadly Arbella was captured and confined in the Tower of London. She died there in 1615, possibly from illness, or starvation. To me, Arbella was neither rebel nor conspirator in the conventional sense. Rather, she was a casualty of dynastic politics and, it could be argued, of her defiance in the face of mortal danger. Her fate, like that of many before her, encapsulates the ‘curse of royal blood.'

I nominate ... Guy Fawkes

Kate Clements, Curator of Collections

 Illustration depicting Guy Fawkes (1570-1606)

Image: Guy Fawkes; the most famous traitor ever? © Historic Royal Palaces. 

Perhaps the most famous traitor ever (Alan Carr aside) Guy, or Guido, Fawkes even has his own commemoration every 5 November. Notorious for ‘gunpowder, treason and plot’, Fawkes was born in York in 1570 and converted to Catholicism when young. He fought in Catholic Spain, and returned to England in 1604, now part of a passionate group of Catholic conspirators. Angry at James I’s intolerance of their faith, they plotted to assassinate the King and his heir while they attended a session of Parliament. The plotters leased a cellar under the House of Lords and planted barrels of gunpowder; Fawkes had the job of lighting the fuse at the crucial moment. But the plotters were betrayed and Fawkes was caught red-handed. Arrested and taken to the King, Fawkes defiantly told him his only regret was failing. He was then interrogated in the Tower of London to reveal his co-conspirators, resisting until the King sanctioned ‘harsher tortures’, which likely meant the rack. He was executed for treason in Old Palace Yard, Westminster, in January 1606.

Guy Fawkes was guilty of one of the boldest acts of treason in British history and paid the ultimate price. However, I can’t help but admire his determination, defiance and sheer nerve: he really was the ultimate traitor.

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A black and white illustration showing eight of the plotters in discussion. The caption reads “Guy Fawkes and the conspirators. (From a Contemporary Print).

Image: From 'Old and New London: A Narrative of its History, its People and its Places', Vol II by Walter Thornbury, 1872-8. © Historic Royal Palaces. 

Guy Fawkes and the Gunpowder Plot | The REAL Story

In a world of religious turmoil, was Guy Fawkes an anti-hero, or a villain? What do you think? In this mini-documentary Curator Alden Gregory explores the causes and consequences of the Gunpowder Plot.