Mowbray remained high in royal favour following the death of his wife, and he was elected to the
Order of the Garter in October 1383, despite his military inexperience. The King granted him
grace and favour rooms at the
royal palaces of
Eltham and
Kings Langley. As an important courtier, Mowbray accompanied Richard on his tour of East Anglia in 1383. His closeness to the King drew the opprobrium of his uncle,
John of Gaunt,
Duke of Lancaster—the most powerful man in the Kingdom after the King. Gaunt accused Mowbray, along with
Robert, Earl of Oxford and
William, Earl of Salisbury of plotting against Richard. Gaunt had fallen out of favour with his nephew and had withdrawn from
the council. In retaliation for his accusations, says the
chronicler Thomas Walsingham, Mowbray, de Vere and Montacute plotted to kill the duke in February 1385. The King held
jousts between 13 and 14 February and Gaunt's murder was to be committed on the 14th; it is possible that Richard did not disapprove, such had relations between him and his uncle broken down over military policy. Gaunt told Richard that he viewed the King's advisors as "unsavoury"; Mowbray and his colleagues lodged a series of further accusations against the duke. Gaunt received a warning of the attack at the joust and fled on the night of 14 February. . On 30 June 1385—as the royal army was about to leave for Scotland—Mowbray received his great-grandfather's office of Marshal of England. He led a force of 99
men-at-arms and 150
archers, serving with Gaunt in the
vanguard. Mowbray helped draw up the King's ordinances for the campaign at Durham, although by now, suggests Given-Wilson, Mowbray's relations with Richard were cooling. Less than a year after his first wife's death, Mowbray married
Elizabeth Fitzalan. Elizabeth was a daughter of
Richard, Earl of Arundel, and, although the King attended their wedding and the week-long festivities accompanying it, it is unlikely that the marriage was popular with Richard. His second marriage must have been a turning point. Richard doubtless saw Arundel as a negative influence on Mowbray and feared the strengthening of the earl's position against him. Mowbray and Elizabeth had also wed without his permission, so the King
distrained Mowbray's estates until he had received the value of the license. Tuck argues that "nor was the king's concern unfounded"; Mowbray had been increasingly isolated at court by the King's latest favourites, such as Oxford, and had moved into the circle of those who opposed the new royal intimates, perhaps seeing them as the best way to dispose of his rival. This circle also included not only Richard's father-in-law but his uncle,
Thomas, Duke of Gloucester. In a sign that Mowbray was not completely out of favour, Elizabeth received her robes as a Lady of the Garter in 1386. Both men had played an important role in parliament's attack on Richard's
chancellor,
Michael de la Pole, Earl of Suffolk at the
Wonderful Parliament of 1386. The Wonderful Parliament had taken place against a backdrop of genuine fear of a French invasion—Walsingham described how Londoners, in his view, like "timid mice they scurried hither and thither—and Arundel had been appointed
Admiral of England. In March the following year he, in turn, appointed Mowbray his deputy, and they took a fleet out of
Margate and encountered a French-
Flemish fleet almost immediately. The result was its crushing defeat. Between 50 and 100 French-Flemish ships were captured or destroyed. The King was unimpressed. When Arundel and Mowbray returned to court, Richard claimed they had only defeated merchants, and Oxford turned his back on the earls. It was, however, an extremely popular victory with the people.
Appellant For most of the 1380s, Mowbray received what he doubtless considered his due from the King in lands, offices and grants. But by 1387, he became increasingly estranged from Richard's court. The main reason for this was probably jealousy of de Vere. While he was wealthy enough not to rely on royal favour, as de Vere did, he expected the honour and dignity that his birth and status demanded. This he saw increasingly syphoned off to his rival. Although the Wonderful Parliament had set up a commission to effectively restrain the King, it turned out to be ineffective. Richard emasculated the commission by leaving London immediately, ignoring its deliberations, and holding his own councils in the provinces. He also took legal advice from his judges who, unsurprisingly, found in his favour that those responsible for parliament's treatment of the King should be deemed traitors. In response, Mowbray joined Bolingbroke, Gloucester, Arundel and Warwick in
appealing several of the King's friends, including Oxford, of treason, and raised an army at
Hornsey, north of London. The Appellants' army engaged Oxford's at the
Battle of Radcot Bridge, inflicting a crushing defeat on the royalists in December. Mowbray did not take part, as he was guarding the road back to the
West Midlands at
Moreton in Marsh, although he may have sent a portion of his retinue to the Appellant army. Mowbray appears responsible for dissuading Gloucester, Arundel and Warwick from marching to London and deposing the King. Indeed, he and Bolingbroke may have been a moderating influence on the others. Conversely, due to his position as
Earl Marshal—one of the two heads of the
Court of Chivalry—his presence with the Appellants enabled them to frame their offensive juridically rather than as a traditional noble rebellion. Mowbray was amongst the Appellants that attended Richard in the
Tower of London—with arms linked— on 30 December 1387 and accused the King of treachery towards them. They also demanded Richard order the arrest of the appellees; Walsingham reports that he only agreed to do so on being threatened, once again, with deposition. The King attempted to divide Mowbray from his colleagues, asking him to stay behind when the others were ready to leave. With the King now under their control, Mowbray and the Appellants called parliament for early 1388. This session became known as the
Merciless Parliament on account of the vengeance it laid on the King's closest supporters, with Mowbray overseeing the executions with "the aid and authority of the mayor, sheriffs, and aldermen of London". Mowbray was to take the condemned to the Tower and "'from there drag him through the city of London as far as the gallows at Tyburn, and there hang him by the neck".
Rapprochment with the King For his part, there are signs that Mowbray was becoming dissatisfied with his comrades through the course of the parliament, which Tuck suggests was because Mowbray was "never as committed to the destruction of the court faction as Gloucester, Arundel, and Warwick". Given-Wilson suggests that the inclusion of Mowbray by the Appellants broadened their base among the nobility (from his having had less acrimonious relations with the King), but also weakened them as a body by diluting their grievances. As indicated by Mowbray's dispute with Warwick over the Gower lordship, they were already "shot through with personal and political differences" as it was. Tuck suggests that, while Mowbray seems able to have stomached the convictions of the others, "the real rift occurred over the question of Sir Simon Burley's fate". Gloucester and Warwick accused him of exercising undue influence over Richard; Burley, the under-chamberlain, had been tutor to the King, who wanted to save him. Mowbray and Bolingbroke agreed, but to no avail, and in May 1388 Burley was
hanged at
Tyburn. Mowbray was loyal to the King and court. Early indications of Mowbray's return to favour came in early 1389 when he had his estates restored to him and was
pardoned for having married without the King's licence. In March, he was appointed warden of the
East March and
castellan of
Berwick Castle, receiving wages of £6,000 in peacetime and twice that in time of war. His appointment was not a success; he alienated the traditional lord of the north,
Henry Percy, Earl of Northumberland, who retired to court. Mowbray held no lands in the north and had few contacts among the
gentry, upon whom he needed to rely to raise his army. Mowbray's tenure in the East March was effectively disabled from the start; Mowbray's ineffectiveness to highlighted in June that year, when a Scottish incursion ravaged the north of England and, facing little opposition, went as far south as
Tynemouth. Mowbray, the
Westminster Chronicle reports, refused the Scottish offer of a pitched battle and retreated to Berwick Castle. The King regained sole control of government around in May 1389, and Mowbray attended a royal council meeting in
Clarendon Palace that September, demonstrating the gulf that existed by then between him and his ex-comrades. At another meeting the following month, the King attempted to increase Mowbray's remuneration in March. The council, headed by
William of Wykeham as
chancellor, refused—"in the name and by the will of all the other lords of the council"—and Richard was forced to acquiesce, albeit , or "with an angry expression". Henry Percy had been recompensed for the loss of the wardenship with the
captaincy of Calais; in 1391, he and Mowbray exchanged offices, returning Percy to the March and sending Mowbray to France.
Martial service As a result of Mowbray's return to the court party, his undertaking of royal service for the King increased. He jousted before Richard's chamberlain at
St Inglevert, near
Boulogne, in April 1390, where he proved himself a champion against the French, who the well-regarded knight led,
Jean de Boucicaut. Mowbray led a group of up to 60 English knights and esquires. The following month another joust was held at
Smithfield, outside London. Mowbray's presence in the King's party was a part of Richard's policy of reconciling the appellants to his personal rule and, by extension, furthering his own power. Here, before the King, Mowbray defeated
John Dunbar, Earl of Moray—who later died, says one chronicler, of his wounds—after six jousts with an unrebated lance. Froissart wrote how, at Smithfield "everyone exerted himself to the utmost to excel: many were unhorsed and more lost their helmets". Mowbray joined the King on his campaign to Ireland in 1394. Richard's strategy was to
plant his nobility across the country in direct confrontation with
Gaelic kings to force them into submission. Mowbray occupied
Carlow, of which he was granted the lordship. Mowbray led several raids against the
King of Leinster,
Art Macmurrough, and a royal letter to the council reported how he "had several fine encounters with the Irish". Mowbray burned nine villages, killing many, and captured around 8,000 head of cattle. On one occasion, he nearly captured MacMurrough "and his wife in their beds". MacMurrough's escape left Mowbray "sorely vexed", and in revenge he had the house razed, as well as 14 surrounding villages. He then marched through the
Blackstairs Mountains "which was all bog...no Englishman has commonly entered before". A number of enemies were captured. Their leader was executed, and his head sent to Richard. Mowbray eventually secured MacMurrough's
indenture of submission to Richard. During these negotiations, Mowbray possessed full powers, and persuaded Macmurrough to evacuate
Leinster for the English. His sub-chieftains followed. In the event neither macMurrough nor his armies left Leinster, and Mowbray was in no position to force them. His attempts to install
English lordship in the province came to nothing; he returned to England in May 1395. ==Royal service to 1398==