In subsequent years, Berkhamsted then became closely associated with the Earls and Dukes of Cornwall.
Henry III's brother, Richard, became the Earl of Cornwall and inherited the castle from his mother Isabella, and it became a permanent part of the earldom.
Berkhamsted was Richard's favourite castle, partially because it was conveniently close to London.
Richard had an impressive, three-storey tower built onto the property in 1254, and restored much of the rest of the castle; the chroniclers of nearby Dunstable complained that his building works required so many carts to carry the timber that local trade in other goods was badly affected.
The castle was used for the central administration of the earldom and Richard's nine stewards would submit their annual financial reports there.
Meanwhile, the town of Berkhamsted itself became rich as a result of the growing wool trade.
Richard died at the castle in 1272, and it passed to his son Edmund.

The castle passed on through Edward I, who found the castle in an apparently poor condition, and his second wife, Margaret, to Edward II.
Edward II gave it to his royal favourite, Piers Gaveston, whom he made Earl of Cornwall.
Gaveston was married there in 1307, with Edward in attendance.
Edward II and Gaveston fell from power in 1327 and John, Edward's second son, took possession as the new Earl of Cornwall.

When John died, Edward III reclaimed Berkhamsted Castle; a survey showed it to be in need of substantial repairs.
Edward had not yet improved Windsor Castle, so used Berkhamsted as his main property, investing considerable sums in renovating it.
His son, Edward, the Black Prince, was created Duke of Cornwall and also made extensive use of the castle, which formed part of the new duchy.
The Black Prince took advantage of the aftermath of the Black Death to extend the castle's park by 65 acres (26 ha), including some woodland pasture stretching over the Chilterns, eventually producing a park covering 991 acres (401 ha).
The castle was used to hold John II of France after he was taken prisoner at the Battle of Poitiers.
When the Black Prince fell ill following his campaigning in France, he retired to Berkhamsted and died there in 1376.

Richard II inherited Berkhamsted Castle in 1377; initially the use of it was given to his favourite, Robert de Vere and, after de Vere's fall from power and exile in 1388, to John Holland.
Henry IV lived in the castle after he deposed Richard in 1400, and he used the property to detain rival applicants to the throne.
During this period Geoffrey Chaucer, later famous for his Canterbury Tales, oversaw renovation work on the castle in his role as a clerk.
Both Henry V and Henry VI owned the castle, the latter making use of it until his overthrow in 1461.
In subsequent years, Berkhamsted then became closely associated with the Earls and Dukes of Cornwall. Henry III's brother, Richard, became the Earl of Cornwall and inherited the castle from his mother Isabella, and it became a permanent part of the earldom. Berkhamsted was Richard's favourite castle, partially because it was conveniently close to London. Richard had an impressive, three-storey tower built onto the property in 1254, and restored much of the rest of the castle; the chroniclers of nearby Dunstable complained that his building works required so many carts to carry the timber that local trade in other goods was badly affected. The castle was used for the central administration of the earldom and Richard's nine stewards would submit their annual financial reports there. Meanwhile, the town of Berkhamsted itself became rich as a result of the growing wool trade. Richard died at the castle in 1272, and it passed to his son Edmund. 
The castle passed on through Edward I, who found the castle in an apparently poor condition, and his second wife, Margaret, to Edward II. Edward II gave it to his royal favourite, Piers Gaveston, whom he made Earl of Cornwall. Gaveston was married there in 1307, with Edward in attendance. Edward II and Gaveston fell from power in 1327 and John, Edward's second son, took possession as the new Earl of Cornwall. 
When John died, Edward III reclaimed Berkhamsted Castle; a survey showed it to be in need of substantial repairs. Edward had not yet improved Windsor Castle, so used Berkhamsted as his main property, investing considerable sums in renovating it. His son, Edward, the Black Prince, was created Duke of Cornwall and also made extensive use of the castle, which formed part of the new duchy. The Black Prince took advantage of the aftermath of the Black Death to extend the castle's park by 65 acres (26 ha), including some woodland pasture stretching over the Chilterns, eventually producing a park covering 991 acres (401 ha). The castle was used to hold John II of France after he was taken prisoner at the Battle of Poitiers. When the Black Prince fell ill following his campaigning in France, he retired to Berkhamsted and died there in 1376.
Richard II inherited Berkhamsted Castle in 1377; initially the use of it was given to his favourite, Robert de Vere and, after de Vere's fall from power and exile in 1388, to John Holland. Henry IV lived in the castle after he deposed Richard in 1400, and he used the property to detain rival applicants to the throne. During this period Geoffrey Chaucer, later famous for his Canterbury Tales, oversaw renovation work on the castle in his role as a clerk. Both Henry V and Henry VI owned the castle, the latter making use of it until his overthrow in 1461.
Berkhamsted Castle