Nothing is known of John Minsterworth's early life, although he was probably born in
Minsterworth, Gloucestershire, from which he presumably took his surname. The historian Andrew Ayton describes him as a "shadowy... man of obscure origins". His first recorded appearance is in 1367 when took a contract with
Humphrey, Earl of Hereford to serve in France; he was also responsible for recruiting Hereford's large
retinue. The following year he
indentured to join the 1370 English expedition to France during the
Hundred Years' War. His activities on that campaign then have incurred criticism from various historians; James Sherborne, for example, has said Minsterworth caused "much trouble" on the campaign, while the historian
Jonathan Sumption describes him as an "ambitious hothead". The expeditionary force assembled at
Rye and
Winchelsea in July 1370. It was the first English army to France led by a commander below the rank of
earl or other peers. The command was originally given to
Sir Robert Knolles of
Cheshire, but delays and criticism of Knolles resulted in joint command given to Knolles and three other experienced captains,
Sir Alan Buxhull,
Sir Thomas Grandison and
Sir John Bourchier. Minsterworth acted under Knolles's captaincy. Sherborne suggests that there may possibly have been "some doubt about Knolles... even before the army sailed". This system of shared leadership appears to have led to jealousies and rivalries arising, particularly regarding how
ransom and booty would be distributed. The
medievalist Mark Ormrod suggests that Knolles's appointment may have implied superiority over his fellow captains, exacerbating tensions among them, of whom Minsterworth was the most outspoken. Contemporary chronicler claim that Knolles's lacked breeding. Jean Le Bel states that he was originally a clothworker, while
Thomas Walsingham says he was a "poor and lowly valet". Either way, Minsterworth seems to have seen himself as socially outranking Knolles. As a result, Sumption suggests that Minsterworth "conceived a virulent hatred of his commander", with Minsterworth calling Knolles such names as "the Old
Freebooter", an "old
brigand", and a "
tomb-robber" while constantly criticising his leadership. Although Minsterworth has been seen as a "comparatively obscure" figure in political society, and of "very modest means", he nevertheless commanded the largest retinue of the army, second only to Knolles himself. His contingent comprised ten knights, around 200
men-at-arms and 300
archers. The scholar
Anne Curry argues that by then, gentry such as Minsterworth were being relied on to field armies comparable in size to those led by the nobility in the earlier years of the war. For this he received £2000 in advance wages. Geographically, his force was recruited from across the country. This included areas close to Minsterworth, such as South Wales and Gloucester, but also further afield, such as
Bedfordshire, London,
Kingston upon Thames,
Daventry,
Lincolnshire and
Warwickshire. In this, he was not unlike the great ducal captains, who also recruited far beyond their feudal heartlands, and entered sub-
indentures. Much of this force was composed of "footloose professionals", as they have been called, often little more than a collection of "outcasts, apostate clergymen and criminals on the run... who served for loot and pardons". Minsterworth had to rely on such men because he lacked the recruiting networks in England that a great lord would have possessed through land holding, tenantry and wide-ranging social influence. While he did recruit men of status who could themselves recruit, such as Sir Thomas Fauconberg from the
Marches, in many cases his recruitment may reflect connections made as a freebooter. This was in contrast, for example, to Knolles, whose wealth allowed him to bear the cost of maintaining an army in the field for an extended period. Landing at
Calais, the army began a
chevauchée (horse charge) across northern and southwestern France to
Bordeaux. This was intended to draw the French away from
Aquitaine, where the
Black Prince was about to begin another campaign with
John, Earl of Pembroke. By November 1370, Minsterworth had rebelled under Knolles's leadership, and became the leader of the increasingly numerous malcontents. Although by this time Knolles was a soldier of "great fame", says the medievalist
Rosemary Horrox, Minsterworth neither appreciated nor respected the man or his abilities. The scholar
Michael Prestwich has suggested that his eventual desertion from Knolles's army was encouraged by the dire straits Knolles's army now found itself in. The
chevauchée had achieved superficial successes, but, due to its failure to force the French to battle, it was under constant
attrition; by now, the army was on the verge of disintegration, mainly due to Minsterworth's mutiny. Knolles may have aggravated his fellow captains further by keeping for himself a disproportionally large amount of the ransoms and booty. This was important to Minsterworth, not only because it impacted his own potential profit, but made it harder to pay his own men, who might, in turn, have deserted him. The tactical and military failures of the campaign were placed firmly at Knolles's door, and he was increasingly accused of misjudgement and inexperience; he may have been as unwilling to face the French in open battle as they were him, which could also have increased dissent among men who felt themselves to be "better formed in
chivalry"; Minsterworth told his companions, "it redounded to their great dishonour to be subjected" to Knolles.
Division of the English force A contemporary
chronicler relates how "out of envy and self-importance" the English captains ended up dividing their army into four, and went separate ways, probably to make foraging easier and increase profits. Minsterworth's force was the first to leave; Knolles followed, taking the majority of the army with him. Soon after, in early December 1370, what remained of the English army was
routed at the
Battle of Pontvallain. Minsterworth was at the battle, and clearly far enough away to escape the enemy. It is possible that he was in communication with the French and that his information lead to the English collapse. Whatever role Minsterworth played, on hearing of the result he fled to
Brittany, probably to Knolles's
castle at
Derval. There, with Knolles, he spent the winter comfortably. Minsterworth decided to return his army to England early the following year. Leaving Knolles in Derval, Minsterworth led a force of somewhere between a few hundred and 1,100 men—possibly including recently arrived, albeit now useless, reinforcements from England—to the port of
Pointe Saint-Mathieu,
Finistère. Continual
ambushes depleted their numbers . Worse news awaited them. When they arrived at the port, there were only two small ships available, far too few for the couple of hundred men who needed transport. Minsterworth was one of the few who could afford passage; those who remained were massacred when the French caught up with them.
Return to England Minsterworth's return to England "as one of the only prominent survivors either not dead, still serving in France, or languishing in a French prison", began a lengthy period of acrimony and recrimination. While he bore most responsibility for the disaster—being, according to Baker, "as guilty as any man for the break up of the army"—at first Minsterworth managed to avoid almost all the blame by putting the responsibility on Knolles. In July 1372, the
King's Council effectively agreed with him and condemned Knolles and Buxhill for the defeat. After the Black Prince and John of Gaunt spoke out for Knolles, the King declared that "he should not be held as responsible as his men for their unruliness, disobedience and arrogance". Edward ensured that Minsterworth was no longer exculpated: he was immediately arrested and charged with
traducing Knolles. Minsterworth failed to appear before the council's enquiry, and at this point—"humiliated...and frustrated in his ambitions"—renounced his allegiance to Edward III. His failure to appear before the council resulted in automatic
outlawry, meaning his estates could be seized by the crown. == Later years, treason and death ==