Initial moves Empress Matilda's invasion finally began at the end of the summer of 1139. Baldwin de Redvers crossed over from Normandy to
Wareham in August in an initial attempt to capture a port to receive Matilda's invading army, but Stephen's forces forced him to retreat into the south-west. The following month, the Empress was invited by her stepmother, Queen Adeliza, to land at
Arundel instead, and on 30 September Robert and Matilda arrived in England with a force of 140 knights. Stephen responded by promptly moving south, besieging Arundel and trapping Matilda inside the castle. Stephen then agreed to a truce proposed by his brother Henry; the full details of the agreement are not known, but the results were that Matilda and her household of knights were released from the siege and escorted to the south-west of England, where they were reunited with Robert of Gloucester. Another theory is that Stephen released Matilda out of a sense of
chivalry; Stephen had a generous, courteous personality and women were not normally expected to be targeted in Anglo-Norman warfare. After staying for a period in Robert's stronghold of Bristol, Matilda established her court in nearby Gloucester, still safely in the south-west but far enough away for her to remain independent of her half-brother. Although there had been only a few new defections to her cause, Matilda still controlled a compact block of territory stretching out from Gloucester and Bristol south into
Wiltshire, west into the Welsh Marches and east through the
Thames Valley as far as Oxford and Wallingford, threatening London. Her influence extended down into Devon and Cornwall, and north through
Herefordshire, but her authority in these areas remained limited. Matilda faced a counterattack from Stephen, who started by attacking
Wallingford Castle which controlled the Thames corridor; it was held by Brian Fitz Count and Stephen found it too well defended. Stephen continued into Wiltshire to attack
Trowbridge, taking the castles of
South Cerney and
Malmesbury en route. In response, Miles marched east, attacking Stephen's rearguard forces at Wallingford and threatening an advance on London. Stephen was forced to give up his western campaign, returning east to stabilise the situation and protect his capital. At the start of 1140, Bishop
Nigel of Ely joined Matilda's faction. Robert's men retook some of the territory that Stephen had taken in his 1139 campaign. In an effort to negotiate a truce, Bishop Henry held a peace conference at Bath, at which Matilda was represented by Robert. The conference collapsed after Henry and the clergy insisted that they should set the terms of any peace deal, which Stephen's representatives found unacceptable.
Ranulf of Chester, a powerful northern magnate, had fallen out with the King over the winter and Stephen had placed his castle in Lincoln under siege. In response, Robert and Ranulf advanced on Stephen's position with a larger force, resulting in the
Battle of Lincoln on 2 February 1141. The King commanded the centre of his army, with
Alan of Brittany on his right and
William of Aumale on his left. Robert and Ranulf's forces had a superiority in cavalry and Stephen dismounted many of his own knights to form a solid infantry block. Robert and Ranulf's cavalry encircled Stephen's centre, and the King found himself surrounded by the Angevin army. Matilda received Stephen in person at her court in Gloucester, before having him moved to
Bristol Castle, traditionally used for holding high-status prisoners. Matilda now began to take the necessary steps to have herself crowned queen in his place, which would require the agreement of the Church and her coronation at
Westminster. Henry of Winchester summoned a council at
Winchester before Easter in his capacity as papal legate to consider the clergy's view. Matilda had made a private deal with Henry that he would deliver the support of the Church in exchange for being granted control over Church affairs. Henry handed over the royal treasury to her, which proved to be rather depleted except for Stephen's crown, and he excommunicated many of her enemies who refused to switch sides. Archbishop Theobald of Canterbury was unwilling to declare Matilda queen so rapidly, however, and a delegation of clergy and nobles, headed by Theobald, travelled to Bristol to see Stephen, who agreed that, given the situation, he was prepared to release his subjects from their oath of fealty to him. The clergy gathered again in Winchester after Easter, on 7 April 1141, and the following day they declared that Matilda should be monarch in place of Stephen. She assumed the title "Lady of England and Normandy" () as a precursor to her coronation. Stephen's wife, Queen Matilda, wrote to complain and demand her husband's release. Nonetheless, Matilda then advanced to London to arrange her coronation in June, where her position became precarious. Despite securing the support of
Geoffrey, Earl of Essex, who controlled the
Tower of London, forces loyal to King Stephen and Queen Matilda remained close to the city and the citizens were fearful about welcoming the Empress. On 24 June, shortly before the planned coronation, the city rose up against the Empress and Geoffrey of Essex; Matilda and her followers fled just in time, making a chaotic retreat back to Oxford. Meanwhile, Geoffrey of Anjou invaded Normandy again and, in the absence of
Waleran of Beaumont, who was still fighting in England, Geoffrey took all the Duchy south of the
River Seine and east of the
Risle. No help was forthcoming from Stephen's brother Theobald this time either, who appears to have been preoccupied with his own problems with France—the new French king,
Louis VII, had rejected his father's regional alliance, improving relations with Anjou and taking a more bellicose line with Theobald, which would result in war the following year. Geoffrey's success in Normandy and Stephen's weakness in England began to influence the loyalty of many Anglo-Norman barons, who feared losing their lands in England to Robert and the Empress, and their possessions in Normandy to Geoffrey. Many started to leave Stephen's faction. His friend and advisor Waleran was one of those who decided to defect in mid-1141, crossing into Normandy to secure his ancestral possessions by allying himself with the Angevins, and bringing Worcestershire into the Empress's camp. Waleran's twin brother,
Robert, effectively withdrew from fighting in the conflict at the same time. Other supporters of the Empress were restored in their former strongholds, such as Nigel of Ely, and still others received new earldoms in the west of England. The royal control over the
minting of coins broke down, leading to coins being struck by local barons and bishops across the country.
Rout of Winchester and the Siege of Oxford Matilda's position was transformed by her defeat at the
Rout of Winchester. Her alliance with Henry of Winchester proved short-lived and they soon fell out over political patronage and ecclesiastical policy; Henry transferred his support back to Stephen's cause. In response, in July the Empress and Robert of Gloucester besieged Henry in his episcopal castle at Winchester, using the royal castle in the city as the base for their operations. Queen Matilda had kept her husband's cause alive in the south-east of England, and the Queen, backed by her lieutenant
William of Ypres and reinforced with fresh troops from London, took the opportunity to advance on Winchester. Their forces encircled Matilda's army. Matilda decided to escape from the city with Brian Fitz Count and
Reginald, Earl of Cornwall, another of her half-brothers, while the rest of her army delayed the royal forces. In the subsequent battle the Empress's forces were defeated and Robert himself was taken prisoner during the retreat, although Matilda escaped, exhausted, to her fortress at Devizes. With both Stephen and Robert held prisoner, negotiations were held to try to come to agreement on a long-term peace settlement, but Queen Matilda was unwilling to offer any compromise to the Empress, and Robert refused to accept any offer to encourage him to change sides to Stephen. Instead, in November the two sides simply exchanged the two leaders, Stephen returning to his queen, and Robert to the Empress in Oxford. Henry held another church council, which reversed its previous decision and reaffirmed Stephen's legitimacy to rule, and the King and Queen were crowned anew at Christmas 1141. Stephen then spent the summer attacking some of the new Angevin castles built the previous year, including
Cirencester,
Bampton and Wareham. During the summer of 1142 Robert returned to Normandy to assist Geoffrey with operations against some of Stephen's remaining followers there, before returning in the autumn. Matilda came under increased pressure from Stephen's forces and was surrounded at
Oxford. Once on the other side, the King and his men stormed into the town, trapping Matilda in the castle. Matilda and her companions reportedly wore white to camouflage themselves against the snow.
Stalemate 's invasion of Normandy, 1142–43 In the aftermath of the retreat from Winchester, Matilda rebuilt her court at
Devizes Castle in
Wiltshire, a former property of the
Bishop of Salisbury that had been confiscated by Stephen. She established her household knights on the surrounding estates, supported by Flemish mercenaries, ruling through the network of local sheriffs and other officials. Many of those that had lost lands in the regions held by the King travelled west to take up patronage from Matilda. Backed by the pragmatic Robert of Gloucester, Matilda was content to engage in a drawn-out struggle, and the war soon entered a stalemate. At first, the balance of power appeared to move slightly in Matilda's favour. Robert besieged Stephen in 1143 at
Wilton Castle, an assembly point for royal forces in Herefordshire. Stephen attempted to break out and escape, resulting in the
Battle of Wilton. Once again, the Angevin cavalry proved too strong, and for a moment it appeared that Stephen might be captured for a second time, before finally managing to escape. Later in the year, Geoffrey of Essex rose up in rebellion against Stephen in East Anglia. Geoffrey based himself from the Isle of Ely and began a military campaign against
Cambridge, with the intention of progressing south towards London. Ranulf of Chester revolted once again in the summer of 1144. Meanwhile, Geoffrey of Anjou finished securing his hold on southern Normandy, and in January 1144 he advanced into
Rouen, the capital of the Duchy, concluding his campaign. Despite these successes, Matilda was unable to consolidate her position. Miles of Gloucester, one of the most talented of her military commanders, had died while hunting over the previous Christmas. Geoffrey of Essex's rebellion against Stephen in the east ended with his death in September 1144 during an attack on
Burwell Castle in Cambridgeshire. As a result, Stephen made progress against Matilda's forces in the west in 1145, recapturing
Faringdon Castle in Oxfordshire.
Conclusion of the war and his wife
Eleanor holding court The character of the conflict in England gradually began to shift; by the late 1140s, the major fighting in the war was over, giving way to an intractable stalemate, with only the occasional outbreak of fresh fighting. Several of Matilda's key supporters died: in 1147 Robert of Gloucester died peacefully, and Brian Fitz Count gradually withdrew from public life, probably eventually joining a monastery; by 1151 he was dead. Many of Matilda's other followers joined the
Second Crusade when it was announced in 1145, leaving the region for several years. Matilda's eldest son Henry slowly began to assume a leading role in the conflict. He had remained in France when his mother first left for England. He crossed over to England in 1142, before returning to Anjou in 1144. In 1147, Henry intervened in England with a small mercenary army but the expedition failed, not least because Henry lacked the funds to pay his men. In the end Stephen himself ended up paying off Henry's mercenaries, allowing him to return home safely; his reasons for doing so remain unclear. Matilda decided to return to Normandy in 1148, partially due to her difficulties with the Church. Matilda first played for time, then left for Normandy in early 1148, leaving the castle to Henry, who then procrastinated over its return for many years. Matilda re-established her court in Rouen, where she met with her sons and husband and probably made arrangements for her future life in Normandy, and for Henry's next expedition to England. Matilda chose to live in the priory of Notre Dame du Pré, situated just south of Rouen, where she lived in personal quarters attached to the priory and in a nearby palace built by Henry. Matilda increasingly devoted her efforts to the administration of Normandy, rather than to the war in England. Geoffrey sent the
bishop of Thérouanne to Rome in 1148 to campaign for Henry's right to the English throne, and opinion within the English Church gradually shifted in Henry's favour. Matilda and Geoffrey made peace with Louis VII, who in return supported Henry's rights to Normandy. Geoffrey died unexpectedly in 1151, and Henry claimed the family lands. Henry returned to England once again at the start of 1153 with a small army, winning the support of some of the major regional barons. Neither side's army was keen to fight, however, and the Church
brokered a truce; a
permanent peace followed, under which Henry recognised Stephen as king, but became Stephen's adopted son and successor. Meanwhile, Normandy faced considerable disorder and the threat of baronial revolt, which Matilda was unable to totally suppress. Stephen died the next year, and Henry assumed the throne; his coronation used the grander of the two imperial crowns that Matilda had brought back from Germany in 1125. Once Henry had been crowned, the troubles facing Matilda in Normandy died away. ==Later life==