Trim Castle

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Trim Castle
Trim, County Meath, Ireland
Trim Castle 6.jpg
The keep and curtain walls of Trim Castle
Trim Castle is located in Ireland
Trim Castle
Trim Castle
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Type Medieval castle
Site information
Condition Ruin
Site history
Built from the 12th century
Built by Hugh de Lacy (keep)
In use Open to public
Events Norman Ireland

Trim Castle (Irish: Caisleán Bhaile Atha Troim) is a Norman castle on the south bank of the River Boyne in Trim, County Meath, Ireland. With an area of 30,000 m², it is the largest Norman castle in Ireland.[1][2] Over a period of 30 years, it was built by Hugh de Lacy and his son Walter as the caput of the Lordship of Meath.


Trim Castle (Dublin Side)

The Castle was used as a centre of Norman administration for the Lordship of Meath, one of the new administrative areas of Ireland created by King Henry II of England. Hugh de Lacy took possession of it in 1172. De Lacy built a huge ringwork castle defended by a stout double palisade and external ditch on top of the hill. There may also have been further defences around the cliffs fringing the high ground. Part of a stone footed timber gatehouse lies beneath the present stone gate at the west side of the castle. De Lacy left Ireland entrusting the castle to Hugh Tyrrel, baron of Castleknock, one of his chief lieutenants. The ringwork was attacked and burnt by forces of the Gaelic High King of Ireland, Ruaidrí Ua Conchobair; Tyrrel, having appealed in vain for help, was forced to flee. Ua Conchobair soon withdrew and De Lacy immediately rebuilt the castle in 1173. His son Walter continued rebuilding and the castle was completed c. 1224. The next phase of the castle's development took place at the end of the 13th century and the beginning of the 14th century; a new great hall (with undercroft and attached solar in a radically altered curtain tower), a new forebuilding, and stables were added to the keep. On Walter's death in 1241 his granddaughter Mathilda ('Maud') inherited the castle. Her second husband was Geoffrey de Geneville, Lord of Vaucouleurs in France. Mathilda died in 1304, and Geoffrey entered the priory at St. Mary's in Trim. His son had died in 1292 and the estate passed to his oldest daughter, Joan. In 1301, Joan married Roger Mortimer and the castle passed to the Mortimer family who held it until 1425, when the line died out.[3] The estate passed to the next heir in the female line, Richard of York, who was killed at the Battle of Wakefield in 1460. In 1461, Richard's son, Edward IV, appointed Germyn Lynch of London to be his representative at Trim.

File:Trim Castle in Ireland.jpg
The inside of one of the towers of Trim Castle.

The castle site was chosen because it is on raised ground, overlooking a fording point on the River Boyne. The area was an important early medieval ecclesiastical and royal site that was navigable in medieval times by boat up the River Boyne, about 25 miles from the Irish Sea. Trim Castle is referred to in the Norman poem "The Song of Dermot and the Earl".

During the late Middle Ages, Trim Castle was the centre of administration for Meath and marked the outer northern boundary of The Pale. In the 16th and 17th centuries it had declined in importance, except as a potentially important military site, and the castle was allowed to deteriorate. During the 15th century the Irish Parliament met in Trim Castle seven times and a mint operated in the castle.

The Castle fell into decline in the 16th century but was refortified during the Irish Confederate Wars in the 1640s. In 1649 after the sacking of Drogheda, the garrison of Trim fled to join other Irish forces and the place was occupied by the army of Oliver Cromwell.

After the wars of the 1680s, the castle was granted to the Wellesley family who held it until Arthur Wellesley (the Duke of Wellington), sold it to the Leslies. In following years it passed via the Encumbered Estates Court into the hands of the Dunsany Plunketts. They left the lands open and from time to time allowed various uses, with part of the Castle Field rented for some years by the Town Council as a municipal dump, and a small meeting hall for the Royal British Legion erected. The Dunsanys held the Castle and surrounds until 1993, when after years of discussion, Lord Dunsany sold the land and buildings to the State, retaining only river access and fishing rights.

The Office of Public Works began a major programme of exploratory works and conservation, costing over six million euro, including partial restoration of the moat and the installation of a protective roof. The castle was re-opened to the public in 2000.


The keep viewed from the undercroft of the Great hall near the River Gate, and a plan

With an area of 30,000 m², Trim Castle is the largest Cambro-Norman castle in Ireland. The design of the central three-story keep (also known as a donjon or great tower) is unique for a Norman keep being of cruciform shape, with twenty corners. It was built on the site of the previous large ring work fortification in at least three stages, initially by Hugh de Lacy (c. 1174) and then in 1196 and 1201–5 by Walter de Lacy. The castle interior was partially the subject of an archaeological dig by David Sweetman of OPW in the 1970s and more extensively by Alan Hayden in the 1990s.

The surviving curtain walls are predominantly of three phases. The west and north sides of the enceinte are defended by rectangular towers (including the Trim Gate) dating to the 1170s; the Dublin gate was erected in the 1190s or early part of the 13th century; and the remaining wall to the south with its round towers dates to the first two decades of the 13th century. The castle has two main gates. The one in the west side dates to the 1170s and sits on top of a demolished wooden gateway. The upper stories of the stone tower were altered to a semi-octagonal shape, c. 1200. The Dublin Gate in the south wall is a single round towered gate with an external barbican tower. It dates from the 1190s or early 13th century and was the first example of its type to be constructed in Ireland.

The Dublin Gate barbican tower at the southern curtain wall

Apart from the keep, the main extant structures consist of the following: an early 14th century three towered fore work defending the keep entrance and including stables within it (accessed by a stone causeway crossing the partly filled-in ditch of the earlier ringwork); a huge late 13th-century three aisled great hall (with an under croft beneath its east end opening via a water gate to the river); a stout defensive tower (turned into a solar in the late 13th century at the northern angle of the castle); a smaller aisled hall (added to the east end of the great hall in the 14th or 15th century); a building (possibly the mint) added to the east end of the latter hall; two 15th- or 16th-century stone buildings added inside the town gatehouse, 17th-century buildings (added to the end of the hall range and to the north side of the keep) and a series of lime kilns (one dating from the late 12th century the remainder from the 18th and 19th centuries).


Trim Castle is open, on payment of an entry fee, to the public every day from Easter Saturday to Halloween (31 October) from 10am. The area inside the castle walls is freely accessible for an admittance fee, while access to the Castle keep is via a 45-minute guided tour. In winter, the complex is open only on weekends and bank holidays.

Points of note

File:Trim and Talbot Castles.jpg
Trim and Talbot Castles. Also visible are the Royal Mint, solar and Trim Cathedral

The Castle is noted for the part it played in the filming of the Mel Gibson directed film Braveheart.

In 2003 there was a controversy surrounding the decision by the Minister for the Environment, Heritage and Local Government Martin Cullen not to oppose the construction of a five-storey hotel across the road from the castle. The development had been condemned by a local councillor, a senior inspector in An Bord Pleanala (acting in a private capacity, and later choosing to withdraw his appeal lest it be considered a conflict of interest) and heritage bodies, many of whom had been critical of the government's treatment of other heritage sites such as Carrickmines Castle (the ruins of which were excavated partly to allow the completion of a roadway). The hotel was opened in August 2006. The recent addition of buildings (including offices for the OPW) outside the west side of the town has been even more visibly intrusive to the castle remains.

See also


  • Reeves-Smith, Terrence. 1995. Irish Castles. Belfast: The Appletree Press Ltd.
  • De Breffny, Brian. 1977. Castles of Ireland. London: Thames and Hudson.
  • Salter, Mike. 1993. Castles and Stronghouses of Ireland. Worc.: Folly Publications.
  • Sweetman, David. 1999. The Medieval Castles of Ireland. Cork: The Collins Press.
  • McNeill, Tom. 1997. Castles in Ireland. London: Routledge.
  1. Trim Castle, Meath Tourism-Ireland.
  2. Heritage Ireland: Trim Castle.
  3. Duchas the Heritage Service (ed) (2002). Trim Castle Co. Meath. pp. 20–26. ISBN 07-557-128-2X.CS1 maint: extra text: authors list (link)<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>

Further reading

  • Sweetman, P. D. (1998), "The development of Trim Castle in the light of recent research", Château Gaillard: études de castellologie médiévale, XVIII: 223–230<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  • Hayden, A.R (2011) Trim Castle, Co Meath: Excavations 1995-8. Archaeological Moniograph Series: 6. Wordwell (Bray) & Stationery Office (Dublin).

External links