OCR Specification focus:
‘The changes and coup of 1258; the expulsion of the Poitevins; the judicial inquiry and duties imposed on knights of the shire; the Provisions of Oxford.’
The crisis of 1258 marked a turning point in Henry III’s reign, when discontented nobles forced sweeping reforms. This rebellion reflected deep resentment of royal policy.
Background to the Coup of 1258
Henry III’s rule had become increasingly unpopular by the late 1250s. His financial mismanagement, failed foreign ventures, and the heavy burden of taxation caused widespread frustration among the barons. The king’s reliance on foreign favourites, especially the Poitevins (relatives of his Lusignan half-brothers from Poitou), intensified the sense of exclusion felt by the English nobility. Tensions escalated into open confrontation in 1258.
Causes of Discontent
Royal extravagance: Henry’s ambitious projects, including attempts to secure the Sicilian crown for his son Edmund, drained the royal treasury.
Foreign influence: The Lusignan family and other foreign courtiers, known as Poitevins, dominated patronage and excluded English barons from power.
Weak governance: Henry’s inconsistent leadership and failure in foreign campaigns, notably in France, undermined baronial confidence.
Taxation pressures: The king’s demands for money to fund wars and schemes pushed barons and the wider population to breaking point.
The Coup of 1258
The coup took place at Westminster during a parliament in April 1258. A group of leading barons, including Simon de Montfort and Richard de Clare, demanded reform of the king’s government. Facing unified pressure, Henry was forced to accept limitations on his personal rule.
Immediate Outcomes
A Council of Fifteen was established, composed largely of nobles, to supervise royal administration.
The king’s ability to act independently was curtailed; the barons gained collective authority over major decisions.
This marked the first stage of what would later be known as the Provisions of Oxford.
Coup of 1258: A forced political reform in which barons imposed restrictions on Henry III’s power, establishing a council to oversee government.
The coup represented a constitutional crisis, with Henry’s authority significantly reduced under aristocratic control.
The Expulsion of the Poitevins
One of the barons’ most pressing demands was the removal of foreign favourites from positions of influence. The Poitevins—Henry’s Lusignan half-brothers and their allies—were targeted for expulsion as part of the 1258 settlement.

Gilded, enamelled effigy of William de Valence (d.1296) in Westminster Abbey, a prominent Poitevin magnate and half-brother of Henry III. His presence symbolises the foreign faction whose removal was demanded in 1258. The image illustrates the aristocratic culture that reformers sought to curb. Source
Significance of the Expulsion
It symbolised the barons’ determination to reclaim political influence.
It reduced Henry’s reliance on foreign relatives, though not permanently.
It provided a temporary sense of national unity, with English nobles asserting control over governance.
The removal of the Poitevins was both a political victory and a symbolic cleansing of the royal household.
The Judicial Inquiry and Local Reform
The coup of 1258 was not confined to court politics but extended into broader governance reforms. The barons initiated a judicial inquiry to investigate royal officials and abuses of power.
Key Measures
Inquiries into sheriffs: Local sheriffs were investigated for corruption and malpractice.
Increased accountability: Officials could be removed or punished if found guilty of misrule.
Knights of the shire: New duties were imposed on knights in local communities, including involvement in inquiries and communication of grievances to parliament.
Knights of the shire: Local representatives of the gentry class tasked with presenting community concerns and overseeing local governance.
This reform reflected the barons’ attempt to extend oversight beyond the royal household into the administration of justice across the kingdom.
The Provisions of Oxford
The culmination of the coup came with the formal adoption of the Provisions of Oxford in June 1258. This document outlined a radical restructuring of royal government.
Structure of the Provisions
Council of Fifteen: Continued to guide the king, with members chosen partly by the barons.
Regular parliaments: Three annual parliaments were to be held to oversee government and ensure accountability.
Sheriff reform: Sheriffs were to be appointed annually and subject to scrutiny, reducing opportunities for corruption.
Baronial oversight: Patronage and administration were brought under noble supervision.
The Provisions of Oxford (1258) required regular parliaments, supervised by a Council of Fifteen, to restrain royal government.

Illumination of a king in parliament with bishops, lay magnates and royal justices arrayed before the throne. Though a 16th-century depiction of Edward I, it illustrates the institutional setting that the Provisions of Oxford sought to regularise—oversight of royal policy by counsel in parliament. Extra figures shown here are not required by the OCR syllabus. Source
Importance of the Provisions
Represented a constitutional milestone in English history, asserting baronial power over royal prerogative.
Strengthened the role of parliament as a check on royal authority.
Laid the foundations for future conflicts between king and nobles, as Henry later resisted these restrictions.
Wider Consequences of the 1258 Reforms
The coup and Provisions initially restored a measure of stability, but they also sowed the seeds of future conflict. Henry’s eventual resistance to baronial control, combined with ongoing grievances, led to the outbreak of the Barons’ Wars in the 1260s.
The expulsion of the Poitevins removed immediate foreign influence but did not end the king’s reliance on favourites.
The judicial reforms introduced the principle of local accountability, foreshadowing later developments in English governance.
The Provisions of Oxford marked the beginning of systematic attempts to limit royal power through collective baronial action.
Henry III’s royal authority was curtailed by baronial reform in 1258, reshaping the balance between crown and community.

Matthew Paris’s portrait of Henry III seated with a sceptre and a model of Westminster Abbey conveys the sacral and architectural ideals of his kingship. It provides a visual counterpoint to the baronial programme of 1258, which sought practical restraints on such royal authority. The abbey model is extra iconography not required by the syllabus but helps explain royal self-presentation. Source
The reforms of 1258 therefore represent a critical moment in the struggle between monarchy and nobility, shaping the political trajectory of England in the mid-thirteenth century.
FAQ
By 1258, multiple pressures coincided: the financial strain of the Sicilian affair, famine in England, and growing frustration with Henry’s reliance on foreign courtiers.
This convergence of crisis created unity among previously divided nobles, making it the right moment to press for reform.
The Council acted as a collective executive body, effectively replacing Henry’s personal authority.
Decisions of major importance required council approval.
Members were nominated by both the king and the barons, though barons held the balance.
In practice, the council limited royal independence but often faced its own internal rivalries.
Simon de Montfort was a leading critic of Henry III and helped organise the baronial opposition.
He provided military credibility due to his experience in France and the Crusades. His leadership gave the coup a figure capable of uniting disparate noble factions, though tensions later arose between him and other barons.
Knights of the shire gave a local voice to the community in national politics.
They investigated abuses of sheriffs and reported grievances.
Their duties linked county society directly to reform, broadening political participation.
This innovation foreshadowed the later role of elected representatives in English governance.
In the short term, yes — the removal of Poitevins and the creation of a council reduced immediate resentment.
However, long-term stability was not achieved. The reforms generated further disputes over who should dominate the council, and Henry’s later rejection of the Provisions led directly to renewed conflict and the Barons’ Wars.
Practice Questions
Question 1 (2 marks):
In which year were the Provisions of Oxford issued, and what did they establish to supervise the king’s government?
Mark Scheme:
1 mark for correct year: 1258.
1 mark for correct body: Council of Fifteen (or equivalent wording showing understanding of its supervisory role).
Question 2 (6 marks):
Explain two reasons why the barons demanded the expulsion of the Poitevins in 1258.
Mark Scheme:
Up to 3 marks for each reason explained (2 reasons required).
Award 1 mark for identification of reason, 1–2 marks for development/explanation.
Possible points:
Foreign dominance in patronage: The Poitevins, particularly Henry III’s Lusignan half-brothers, monopolised land, offices, and royal favour, excluding English nobles (1 mark identification, 1–2 marks explanation).
Political resentment: Their presence was seen as undermining traditional baronial influence in government, creating widespread hostility and driving demands for their removal (1 mark identification, 1–2 marks explanation).
Financial strain (alternative): The Poitevins’ rewards placed further pressure on the royal treasury and taxpayers, intensifying dissatisfaction with Henry’s rule (1 mark identification, 1–2 marks explanation).
Maximum 6 marks.