Dunstanburgh Castle in Northumberland was founded by the Earl of Lancaster in the early 14th century. The earl rebelled against King Edward II in 1321, and the following year was captured and executed. On his death, Dunstanburgh Castle became royal property.
During the Wars of the Roses in the mid-15th century control of Dunstanburgh Castle fluctuated between Lancastrian and Yorkist control several times. During the conflict the castle was besieged just once – with control depending more on the changing loyalties of the commander – and on this occasion surrendered before an assault due to dwindling supplies. After the conclusion of the war the castle remained a royal property but was increasingly neglected and allowed to fall into a state of disrepair. The ruins are now open to the public.
Dunstanburgh Castle was built in the barony of Embleton on the coast of Northumberland. Thomas, Earl of Lancaster, owned the barony and was a cousin of King Edward II. The barony was only a minor part of Thomas' estates as he also held three earldoms, those of Lancaster, Leicester, and Derby. Thomas and other magnates were jealous of the influence of Piers Gaveston in the royal court, and in 1312 Gaveston was captured at Scarborough Castle, tried, and executed. Thomas and the earl of Warwick were the main instigators of the trail. Edward II pardoned Thomas, but later records show that in May 1313 construction of the castle at Dunstanburgh was already underway, establishing a power base far from the king's centre of influence. Thomas of Lancaster was the second richest secular person in England (only the king was wealthier) and had an income of £11,000 per year. As such building a stone castle at Dunstanburgh would have been easily absorbed by his finances.
In the early 14th-century, England was at war with Scotland, and in June 1314 Edward II suffered a crushing defeat at the battle of Bannockburn. In the aftermath of the battle, Edward II was heavily reliant on his cousin Thomas for the defence of northern England. In 1315, two years after the first mention of construction, Thomas was granted a licence to "crenellate his dwelling-place of Dunstanburgh".
The name Dunstanburgh was thought to be a 14th-century creation, emulating the name of nearby Bamburgh Castle. However it is now thought that the -burgh suffix may refer to a previous fortification on the site. Archaeological investigations indicated that there was prehistoric or Roman activity on the site of the later castle, possibly an Iron Age promontory fort. By the time Dunstanburgh Castle was built, the area had been used as farmland for several centuries. Dunstanburgh Castle was a statement of power, and would have been visible from Bamburgh Castle, a royal castle 15km away. It has been suggested that Dunstanburgh's architecture was intended to rival the castles built by King Edward I in Wales during the English conquest of the late 13th century (the likes of Caernarfon and Conwy).
In 1321, a group of English barons revolted against Edward II and attacked the lands of his favourites, the Despensers. By March 1322 the rebellion was failing, and it was decided to retreat to Dunstanburgh Castle as Thomas of Lancaster was one of the baronial leaders. En route to the castle Thomas and his army were forced to face the royal army; the earl was captured at the battle of Boroughbridge and executed after a trial. Dunstanburgh Castle then became royal property, and it is thought that building work had finished by this point, although records show that maintenance was carried out over the following decades.
Though it seems likely that Dunstanburgh Castle was not built to keep the Scots out of England, once under royal control it took on new importance in the context of border warfare. Edward II installed a garrison of 40 men-at-arms and 40 light cavalry. Because Lancaster had died as a rebel his family had not inherited his estates, and it was not until 1326 that his brother was given control of the family property. In 1366, John of Gaunt (son of King Edward III) became earl of Lancaster through marriage and was the new owner of Dunstanburgh Castle. Under John of Gaunt the most important building work at the castle since its construction was carried out. The castle built by Thomas of Lancaster was entered through a monumental two-towered gatehouse, but under John the entrance was blocked and a new gatehouse added immediately to the west. In 1399 the castle came under direct control of the king after John of Gaunt died and his son assumed the crown as Henry IV.
It was standard practice for the lord of the castle to appoint a constable who would oversee that administration of the castle on a day-to-day basis. Documents show this arrangement was in place from Dunstanburgh Castle's earliest history, and one of the castle's towers is named after John de Lilburn, a constable in the 1320s. Sir Ralph Percy, a powerful magnate in northern England, was the constable of Dunstanburgh from 1457 and it was during his tenure that the Wars of the Roses broke out between the houses of Lancaster and York over the accession to the throne. The conflict was to have direct consequences for Dunstanburgh Castle. At the outbreak of war, Percy was loyal to the Lancastrian King Henry VI, and along with Dunstanburgh held the castles of Alnwick and Bamburgh. However, Percy's allegiance wavered several times, and in September 1461 he declared himself for the Yorkist cause. The following year Henry VI's queen, Margaret of Anjou, brought reinforcements from overseas. When the army landed at Bamburgh, Percy reasserted his Lancastrian allegiance. A Yorkist army moved north to confront the threat, and while the Lancastrian army retreated north Dunstanburgh Castle was besieged. When supplies were running low Percy surrendered the castle and again switched sides. This meant he was still in command of Dunstanburgh in March 1463 when a Lancastrian army made up of Scottish and French soldiers was in the area, and he was in a position to give control of Dunstanburgh back to the Lancastrians. The following year the castle was again surrendered to Yorkist control, though the war concluded in 1485 with a Lancastrian victory at the battle of Bosworth and King Henry VII assumed the English crown.
Documents from the 16th century show that Dunstanburgh Castle was suffering from neglect. Dunstanburgh Castle passed out of royal control when it was sold into private ownership in 1604 before it was acquired by Sir Ralph Grey a year later. Sources from the the following century show that a large part of the area inside the castle was being used as farmland. The Grey family retained possession of Dunstanburgh Castle until they sold it. In 1930 the state took over custodial duties of the ruins. Before the castle was handed over to the state, the site was cleared, with the ditches and well emptied and parts of the foundations exposed. Records of this work and what was discovered do not survive, but proper excavations were undertaken in 1930 and 1931. There has been no excavation since, with archaeological study focusing on creating a photographic record, surveying the earthworks around the castle, recording the standing fabric of Dunstanburgh Castle, non-invasive geophysical surveys, and maintaining a watching brief.
Layout and architecture
The earliest part of Dunstanburgh Castle is the outer wall enclosing the site and its associated features, built by Thomas of Lancaster. Dunstanburgh Castle covers a total area of 4 hectares, making it large for a medieval castle. This may be because the castle reused surviving Iron Age fortifications to establish its limits (as can be seen at Beeston Castle in Cheshire). By comparison, at its height in the late 13th century the walls of the Tower of London – which belonged to the Crown and had multiple building phases over the centuries – enclosed an area of 5 hectares. Only the north of the site is not protected by a wall, in this case it is because the ground drops steeply away to the North Sea. The eastern wall, facing the sea, is featureless, however there are two towers attached to the south wall (Constable's Tower and Egyncleugh Tower), and on attached the west (Lilburn Tower). In the south west corner of the circuit of walls was a monumental gatehouse and a barbican through which the castle was entered. In the late 14th century this was closed off and an alternative gatehouse built next to it. At the same time, walls were built behind the grand gatehouse build by Thomas of Lancaster, effectively creating a small enclosure within the castle.
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