Breton Rebellion of 1379
The
Breton Rebellion of 1379, also called the
Revolt of the Breton League, was an uprising of the Breton nobility against King Charles V of France in defiance of the king's decision to annex the duchy of Brittany.
Background
The War of the Breton Succession was settled after more than two decades of bloody stalemate with the victory of the English candidate, Jean de Montfort, and the death of his French foe, Charles de Blois, at the 1364 Battle of Auray. Blois's widow and Montfort's dynastic rival, Jeanne,
suo jure countess of Penthièvre, recognized Montfort as Duke Jean IV in the 1365 Treaty of Guérande. Jean rejected his English alliance and recognized the Valois as the rightful kings of France as part of the treaty, but the prominence of Blois-Penthièvre supporters at the court of King Charles V of France strained relations between the king and duke. As a result, Jean negotiated a new alliance with England in 1372.
The Breton nobility, exhausted by the duchy's long and financially ruinous civil war, strongly opposed further entanglement in the war between England and France. Jean's support within the duchy quickly collapsed when the new English alliance was discovered. Charles V's Breton favorites, Olivier V de Clisson and Bertrand du Guesclin, forced Jean into exile in 1373. Brittany was effectively under Clisson's control by 1375.
Jeanne, who had largely exited Breton politics and mainly resided in Paris since 1365, took a more direct role in the management of her estates soon after Jean was driven into exile. She eventually returned to Brittany, establishing her household at Guingamp in 1377. Though she acted only as countess of Penthièvre, her move was a clear sign that she hoped to revive her claim on the duchy.
The affairs of state were complicated. Clisson commanded French garrisons at ducal strongholds, but the ducal government continued to run autonomously under the
de facto regency of Jean I, viscount of Rohan, who also administered the ducal demesne. Rohan, like most Breton lords, assumed that the duke and the king would eventually reconcile their differences. In 1378, however, Charles chose to end this awkward interregnum in ducal government by annexing Brittany and joining it to the royal demesne. This was immediately and overwhelmingly unpopular with the Breton people and especially the nobility.
Conspiracy
On 4 December 1378, the
parlement of Paris heard a list of treasonable offenses committed by Jean IV. A sham trial proceeded in the absence of the duke, who was an exile in England. Jean was found guilty two weeks later and the duchy of Brittany was declared forfeit to the crown.
Jeanne, who had returned to Paris for the proceedings, was enraged. Brittany's annexation by the crown was a total invalidation of her claim to the duchy. Her lawyers had objected to the proceedings in the
parlement, but had been brushed aside. Jeanne left Paris for her lands in Brittany at once.
Charles de Blois, Jeanne's late husband, had been the main driver of her cause in the war. He was one of the most renowned knights of his age—a brave, intelligent, intensely pious figure who inspired great loyalty from those who followed him. He was so crucial to her party that Jeanne was prepared to concede her claim after his capture by the English in 1347, but the king of France intervened to stop her. After Blois's death in 1364, Jeanne negotiated the treaty that brought Jean to power. In 1378, Charles V seemed to believe that, since Jeanne had always been a secondary figure in pressing her own claim, he could simply ignore her protests in the
parlement. This was a serious misreading of Jeanne's tenacity and political talents.
Louis I, duke of Anjou, who was Charles's brother and Jeanne's son-in-law, was named governor of Brittany and tasked with bringing the ducal government under royal control as soon as possible. Anjou proceeded cautiously in light of Jeanne's dramatic exit from the capital. He was not completely comfortable with the disinheritance of his wife's family and he understood that the local nobility would be highly skeptical of the king's decision. Still, he believed a diplomatic approach that included appointments to office, land grants and other thinly-veiled bribes could win over the Breton elite.
In early 1379, Jeanne brought her family and household into a conspiracy to oppose the king and began to quietly reach out to members of the secular nobility and the higher clergy. The ferocity of the opposition to the annexation was quickly understood. Jeanne believed that they could convince the king to reverse his decision if they could present an alternative candidate for the ducal throne. She tasked her third son, Henri, with discouraging the suspicions of the duke of Anjou while a pair of ambassadors was secretly dispatched to England.
Jean de Blois, Jeanne's eldest son and heir, had been an English hostage since boyhood. He had been delivered to the English as surety that Charles de Blois's ransom would be paid in full after Charles's release in 1356. The ransom was never paid, however, and Jean de Blois had thus spent nearly two-thirds of his life as an English prisoner. Still, though, Jeanne hoped that the local opposition to the annexation would force the king to accept her son as duke in the event of his release.
On 17 March, Jeanne's envoys arrived at Westminster. They were greeted warmly and even allowed to meet with Jean de Blois, but they were unable to secure his release. The English stood to gain nothing from Jean de Blois's release while they still had the opportunity to restore their ally, Jean IV, to the ducal throne.
On 1 April, Rohan and Guy XII, baron of Laval, the two most powerful lords in Brittany, were made to appear in Paris. They were interrogated by the king's council and made to swear oaths to the king before they were allowed to depart. There are few details of their interrogation, but the timing strongly suggests that some word of Jeanne's efforts had reached the capital. The king's longtime Breton councilors, Clisson and Guesclin, were made to swear similar oaths around this time.
Rohan and Laval's summons to Paris did not warm the two lords to the annexation and pushed them towards an alliance with Jeanne. Once back in Brittany, the pair joined Jeanne at a secret meeting where they renounced their oaths to the king on the condition that they were made under duress. Jeanne, fearing that her plot had been discovered and emboldened by Rohan and Laval's rejection of the king, moved closer to open rebellion.
On 22 April, a great majority of the Breton nobility gathered at Rennes. Knights, squires, and a large number of experienced captains were called to join the secular lords, leading to a rather martial assembly in which professional soldiers were overrepresented and the more diplomatic voices of ecclesiastical lords were drowned out. The presence of longtime Montfortists like Briant de Lannion demonstrated the breadth of the opposition to the king's decision. Jeanne, the key figure in organizing this opposition, deferred to Rohan as debate began. The viscount's status as a regent in all but name helped to legitimize the assembly, though Jeanne would remain the dominant figure behind the scenes.
Rebellion
On 25 April, the lords signed a letter declaring their resistance to the annexation. The duchy of Brittany, they said, was not part of the kingdom of France and the oaths of homage that the dukes of Brittany had sworn to generations of French kings did not entail fealty. A king therefore could not act unilaterally in dispossessing a duke, but could only act with the consent of the Breton people, which they did not give. This legal pretext did not hide the true reason for the nobility's rebellion, though, as the letter concluded that Brittany was not "like Normandy" and it would not be subject to the king's oppressive fiscal regime, the intrusiveness of his tax collectors, or his degradation of local rights and privileges.
Jeanne put herself in a precarious position as she encouraged the lords of Brittany to formalize their league and declare their rebellion. The Montfort and Blois-Penthièvre factions had united to preserve the autonomy of the duchy, but there was no duke to lead them. Jeanne could not declare herself duchess without alienating the Montfortists, and she could not fight both the Montfortists and the French crown.
On 30 April, Jeanne struck a deal with the Mortfortist party that paved the way for Jean IV's return under the terms to which she and Jean had agreed in the 1365 Treaty of Guérande. Jeanne had likely always been willing to accept the duke's return in the event that she could not secure the duchy for herself or her eldest son. Her treaty with Jean had named her son as his heir in the event that Jean died childless, which he was despite being more than 10 years into his second marriage. For Jeanne, it was better to restore the childless duke with whom she had a treaty than it was to submit to the king who had rejected her family's rights entirely.
The king and his council were stunned when a copy of the Rennes letter arrived in Paris. Its signatories included every major figure in Brittany, save Clisson and Guesclin. Anjou was humiliated. He had been outmaneuvered by his mother-in-law. Worse still, his cautious policy looked suspicious in retrospect. Jeanne's sons were all childless at the time, presenting the possibility that Brittany could eventually be inherited by her daughter, Anjou's wife, in the event that the annexation was stymied. Rumors swirled that Anjou had been complicit in Jeanne's treachery. He was removed from the governorship of Brittany and left court soon thereafter.
Louis II, duke of Bourbon, was named as Anjou's replacement and adopted an altogether more aggressive approach. He dispatched Clisson and an array of commissioners to take control of the ducal administration while Bourbon himself began gathering an army. Clisson rode into the ducal capital at Nantes, but found that he could go no farther. The castle was garrisoned by men loyal to the crown, but the local population had taken control of the walls guarding the town. They barred Clisson's entry and refused to negotiate their position, claiming that they held the town on behalf of the duke.
The situation in Nantes repeated itself across eastern Brittany. French garrisons that had been stationed in the area began arriving at Champtoceaux and other French fortresses in the Breton marches. Their captains reported that the local population had become so hostile toward them that they had been forced to flee their positions. By the end of May, the Breton league had command of every major castle and town in eastern Brittany, except for
English-controlled Saint-Malo and the French-controlled fortress at Nantes.
On 15 May, representatives of the Breton league arrived in England to meet with Jean IV. They presented him with a copy of the Rennes letter and invited him to return to Brittany and lead their cause. Jean greeted them with a mix of enthusiasm and skepticism. The league had revived his claim, but a lifetime of war made him question whether the Blois-Penthièvre faction was truly committed to it. Jean turned to the English in hopes that they would provide an armed escort that could guarantee his safety. The English were eager to see Jean retake Brittany, but were unwilling to provide Jean with an army without assurances of their own.
Three-way talks between Jean, the Breton league, and the English proved difficult. Several major issues divided the parties, including Jean's homage, the possibility of an Anglo-Breton campaign in western France, and the status of English positions at Brest and Saint-Malo. Negotiations dragged on for weeks.
In June, news of the league's diplomatic mission in England inevitably reached Paris. The prospect of Jean returning as duke forced the crown to reverse course once more. The king recalled Anjou and adopted a more conciliatory tone toward the Breton lords. Bourbon, who had by now raised 2,500 men for a planned invasion, was ordered to move his army to Avranches, from where he could respond to English invasion via either Cherbourg or Saint-Malo.
Jean learned of the French crown's attempts to reconcile with the Breton league sometime in July. He feared that his window of opportunity was closing and hastily gathered every man in his service, declaring he would return to Brittany without delay. As a result of his being bankrupt through much of the 1370s, though, every man in his service amounted to just a few dozen figures of little renown. John of Gaunt, duke of Lancaster and lord regent of England, was suspicious of Jean's intentions and offered to put several knights from his own retinue under Jean's command. This was ostensibly for Jean's protection, but in reality was a means for the English to receive direct reports on the duke's movements. Jean embarked for Britttany before the end of the month.
On 3 August, Jean landed at the English fortress of Saint-Malo on the northern coast of Brittany. His sudden arrival caught the French flat-footed. Anjou had only recently returned and set up his headquarters on the Breton marches at Pontorson. He had launched an aggressive diplomatic campaign to try to pry the two figures at the heart of the rebellion away from the league. He preyed on the prejudices of Rohan, who was perhaps the most fiercely anti-English lord in Brittany, to poison the viscount against Jean's return while also floating the idea that Jeanne's younger son, Henri, could be made duke. The effort, however, was too late now that Jean had returned. Anjou, unsure whether English forces were to follow Jean's arrival, fled Pontorson for Avranches, where Bourbon and his army were stationed.
On 6 August, Jean and Jeanne met at Dinan. Over the next three days, nearly the whole of the Breton nobility, including Rohan, gathered there to offer their submissions to Jean. Over the week that followed, a new ducal government was formed and the lords committed themselves to raising an army to force Clisson's men from the castle at Nantes, the only position in Brittany still under French control.
Ceasefire
Events in Brittany had moved far too quickly for the French to develop a coherent strategy in spring 1379, allowing the Breton league to assume control over most of the duchy. As reports trickled in from Dinan in August, Anjou recognized that events threatened to spiral out of control once more and raced to salvage what remained of the situation. He wrote to Jean directly, addressing his letter to the "former duke," and arranged a conference at the border castle of Mont-Saint-Michel.
On 17 September, a six-month truce was signed by French and Breton envoys. The hastily-arranged agreement froze the situation in Brittany until the spring. The French crown did not formally recognize Jean as duke, but agreed to take no action against the rebellious Bretons. In exchange, Jean agreed to take no action against the French garrison at Nantes and to disallow the movement of English troops within the lands under Breton control. Future talks were arranged to negotiate a permanent resolution.
News of the ceasefire and peace talks reached England as
parliament met in the fall, stunning those who had expected their years of support for Jean to be returned with an alliance against the French.
The French, for their part, still publicly held that the judgment of the
parlement of Paris was valid and that the duchy of Brittany had been joined to the crown. Privately, however, the king and his council understood that they had failed completely both in their attempts to annex the duchy and to stop Jean's return. They noted, though, that no English army had appeared to support the duke. Driving a wedge between Jean and the English was to be the focus of French efforts over the coming months, though
other events would soon overtake the situation in Brittany as the primary interest of the crown.