John Mowbray, 3rd Duke of Norfolk, , Earl Marshal (12 September 14156 November 1461) was a fifteenth-century English magnate who, despite having a relatively short political career, played a significant role in the early years of the Wars of the Roses. Mowbray was born in 1415, the only son and heir of John de Mowbray, 2nd Duke of Norfolk, and Katherine Neville. He inherited his titles upon his father's death in 1432. As a minor he became a ward of King Henry VI and was placed under the protection of Humphrey, Duke of Gloucester, alongside whom Mowbray would later campaign in France. He seems to have had an unruly and rebellious youth. Although the details of his misconduct are unknown, they were severe enough for the King to place strictures upon him and separate him from his followers. Mowbray's early career was spent in the military, where he held the wartime office of Earl Marshal. Later he led the defence of England's possessions in Normandy during the Hundred Years' War. He fought in Calais in 1436, and during 1437–38 served as Warden of the Eastern March on the Anglo-Scottish border, before returning to Calais.
Mowbray's marriage to Eleanor Bourchier in the early 1430s drew him into the highly partisan and complex politics of East Anglia, and he became the bitter rival of William de la Pole, Earl (later Duke) of Suffolk. Mowbray prosecuted his feuds with vigour, often taking the law into his own hands. This often violent approach drew the disapproving attention of the Crown, and he was bound over for massive sums and imprisoned twice in the Tower of London. His enemies, particularly de la Pole, also resorted to violent tactics. As a result, the local gentry looked to Mowbray for leadership, but often in vain; de la Pole was a powerful local force and a favourite of the King, while Mowbray was neither.
As law and order collapsed in eastern England, national politics became increasingly factional, with popular revolts against the King's councillors. Richard, Duke of York, who by the 1450s felt excluded from government, grew belligerent. He rebelled twice, and both times Mowbray defended King Henry. Eventually, Mowbray drifted towards York, with whom he shared enmity towards de la Pole. For much of the decade, Mowbray was able to evade direct involvement in the fractious political climate, and aligned with York early in 1460 until York's death later that year. In March 1461, Mowbray was instrumental in Edward's victory at the Battle of Towton, bringing reinforcements late in the combat. He was rewarded by the new regime but did not live to enjoy it. He died in November 1461, and was succeeded as Duke of Norfolk by his only son, John.
Background and youth John Mowbray was the only son of John de Mowbray, 2nd Duke of Norfolk, and his wife Katherine Neville, who was a daughter of Ralph Neville, 1st Earl of Westmorland, a powerful magnate in northern England. The younger Mowbray was born on 12 September 1415 while his father was in France campaigning with Henry V. Mowbray was seventeen at his father's death and still legally a minor. During his minority, his estates were granted by Henry VI to Humphrey, Duke of Gloucester for a farm of 2000 marks (approximately £1,667). Until his majority, the Mowbray lands were administered by the English exchequer to the benefit of the crown, at a time when the government was in dire need of cash, due to the Hundred Years' War. Mowbray's wardship, and the right to arrange his marriage, was sold to Anne of Gloucester, Countess of Stafford for £2,000. By March 1434, Anne had arranged for Mowbray's marriage to her daughter Eleanor Bourchier.
As a young adult, Mowbray appears to have been raucous and troublesome, and surrounded himself with equally unruly followers. This seems to have drawn the King's attention: Mowbray had only recently—with the other lords—sworn an oath in parliament not to recruit or welcome villains and wrong-doers into his affinity, nor to maintain them. He was summoned before the King and his council. Mowbray was instructed in how to conduct himself henceforth, and a precise regimen was imposed upon him. Exactly which aspects of Mowbray's behaviour were viewed as problematic is unknown, but since it resulted in unprecedented council-imposed restrictions upon him, his conduct must have been viewed as "abnormal". The ordinances not only dictated the time he should go to bed at night and rise in the morning, but the conditions addressed his demeanour also. His unruly followers were dismissed and replaced with those deemed suitable by Henry VI. Their stated role was to turn Mowbray towards "good reule and good governaunce," and they were not just to guide Mowbray but to report any disobedience of the council's instructions back to that body.
Inheritance On his father's death in 1432, Mowbray inherited the office of Earl Marshal, but not yet his father's lands or titles. Mowbray's father lacked full control of his estates, as they were encumbered by two Mowbray dowagers, the elder Mowbray's mother Elizabeth Fitzalan (until her death in 1425), and his sister-in-law, Constance Holland. They each held a third of the inheritance as their dower, a situation which repeated itself on the elder Mowbray's death in 1432, leaving Constance and Katherine as the two dowagers. Constance died in 1437, but Mowbray's mother survived until around 1483. Because of this, the historian Rowena Archer—who made one of the few full-length studies of the Mowbray family—described Mowbray as inheriting a "hopeless" and "onerous" legacy. It also had political consequences for the future. As he never held much property in the counties where his inheritance was (only holding, for example, seven of the twenty-six manors held by the Mowbrays in Norfolk and Suffolk), his influence was thus restricted there.
Immediately after his father's death, Mowbray made claim to the earldom of Arundel, setting him against John, Lord Maltravers, who had also made claim. This was an old dispute. Mowbray's father and grandfather had also sought the earldom, blocking Maltravers' father's claim. Mowbray based his right through his grandmother Elizabeth Fitzalan, Duchess of Norfolk; Maltravers through his great-grandfather Richard FitzAlan, 11th Earl of Arundel. In July 1433 Mowbray presented a petition to Parliament (receiving special permission to attend as a minor). Mowbray—"in a rather remarkable decision," says Archer—lost the case. Maltravers, though, died in May 1435 and so was never summoned to parliament under his new title.
Mowbray's ancestors had been largely Midlands magnates based around Lincolnshire estates. Even his father—after he became duke of Norfolk and inherited his mother's East Anglian dower lands—was often an absentee lord. Mowbray's father was thus never able to establish a sizeable (or "particularly coherent") regional following there, and this was the situation Mowbray inherited.
Royal service
In August 1436 Mowbray accompanied the Duke of Gloucester on a campaign to relieve Calais, then under siege by Philip the Good, Duke of Burgundy. The expedition, in which Mowbray provided a contingent, was "one of the largest English armies assembled during the fifteenth century." The campaign was a success, and Burgundy was forced to withdraw. On 13 September that year, Mowbray received livery of his inheritance, and immediately began a busy period devoted to royal service. In 1437, possibly because of Gloucester's patronage, Mowbray was appointed Warden of the Eastern March for a one-year term. He had little experience of the north of England, yet was paid wartime wages of £5,000 to campaign against the Scots.
Mowbray returned to Calais and Guînes in 1438, leading an expedition to strengthen their defences as Burgundy still presented a threat. Although he shortly after returned to England, in June 1439 he was again back in Calais, at Oye, escorting Archbishop John Kemp's diplomatic mission to the peace conference. Possibly Mowbray disapproved of royal foreign policy, which was then aimed at making peace with the French.
Feud with William de la Pole For much of the 1430s, Mowbray had problems in East Anglia, where the bulk of his estates now lay. William de la Pole become increasingly powerful, both at court and in the region, and was Mowbray's biggest rival. Mowbray had enough political clout in the 1430s to control parliamentary representation in Suffolk, but the local importance of the duke weakened his grasp. Mowbray clashed with de la Pole, and committed many illegalities doing so. These included damaging property of rivals, assaults, false allegations of outlawry (with confiscation of goods), and even murder.
For Mowbray, East Anglia as the focus of his landed authority was forced upon him since this was where the majority of his estates were located: much of his Lincolnshire inheritance was held by his mother as dower. He was then a newcomer to political society in the region, and had to share influence with others. By the time of his majority, de la Pole—with his links to central government and the King—was an established power in the region. He hindered Mowbray's attempts at regional domination for over a decade, leading to a feud that stretched from the moment Mowbray became Duke of Norfolk to the murder of de la Pole in 1450. The feud was often violent, and led to fighting between their followers. In 1435, Robert Wingfield, Mowbray's steward of Framlingham, led a group of Mowbray retainers who murdered James Andrew, one of de la Pole's men. When local aldermen attempted to arrest Wingfield's party, the latter rained arrow fire upon the aldermen, but Mowbray secured royal pardons for those responsible.
By 1440, de la Pole was a royal favourite. He instigated Mowbray's imprisonment on at least two occasions: in 1440 and in 1448. The first saw him bound over for the significant amount of £10,000, and confined to living within the royal Household, preventing him from returning to seek revenge in East Anglia. Likewise, apart from an appointment to commissions of oyer and terminer in Norwich in 1443 (after the suppression of Gladman's Insurrection), he received no other significant offices or patronage from the crown. A recent biographer of Mowbray's, the historian Colin Richmond, has described this as Mowbray's "eclipse". Richmond suggests that soon after his last imprisonment in 1449, Mowbray undertook a pilgrimage to Rome; a licence for him to do so had been granted three years earlier.
De la Pole fought back with what one contemporary labelled "greet hevyng an shoving." He was successful in doing so. Within a couple of years, Mowbray could not protect his retainers as he had previously done. A Paston letter tells how Robert Wingfield, who was involved in a bitter dispute with one Robert Lyston, "procured and exited the wurthi prince the Duke of Norffolk to putte oute ageyn the seid Robert Lyston" from the latter's Suffolk manors. Lyston, with de la Pole's support, repeatedly sued Wingfield until in 1441 Wingfield was imprisoned in the Tower of London. In 1440, Mowbray was able to influence the Exchequer to quash Wingfield's fines; but Mowbray's success was fleeting. Mowbray was more successful in his support of John Fastolf—in one of the latter's many lawsuits 1441, and was able to impose an advantageous settlement (for Fastolf) in Chancery. Generally, though, says Helen Castor, Mowbray's influence "proved woefully inadequate" to protect and defend his retainers and tenants to the degree they could reasonably expect from their lord. It was his supporters' misfortune, one historian has said, that "Norfolk's power never matched the status attributed to him".