De Lacy The land area of Meath was owned by the church but was granted to
Hugh de Lacy in 1172 by
Henry II of England as one of the new administrative areas. 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. The 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. 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, or
Raymond FitzGerald, immediately repaired or rebuilt the castle in 1173. After Hugh's death in 1186 his son
Walter de Lacy succeeded as Lord of Meath. He continued rebuilding and the castle was completed in the 1220s, most likely in 1224. The year when construction was completed was considered to be 1220 by historians in the 19th century but that is now in dispute.
Geneville and Mortimer 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 de Lacy's death in 1241 his granddaughter
Mathilda ('Maud') inherited the castle. Her second husband was
Geoffrey de Geneville (brother of the crusade historian
Jean de Joinville), Lord of
Vaucouleurs in
Champagne, France, and of many lordships in England and Ireland which were to devolve upon his heirs. His son Piers de Geneville (who married
Joan de Lusignan) died in 1292 leaving a daughter
Joan, who in 1301 married
Roger Mortimer (1st Earl of March). Mathilda having died in 1304, in 1308 Geoffrey conveyed his Irish lordships to Roger Mortimer, and entered the
priory at St. Mary's in Trim. Joan Mortimer inherited the title Baroness Geneville
suo jure when Geoffrey died in 1314. The castle thereby passed to the Mortimer family who held it until 1425, when the male line died out with
Edmund Mortimer, 5th Earl of March. After this the estate passed to
Richard of York, son of Edmund's sister
Anne Mortimer by
Richard of Conisburgh, 3rd Earl of Cambridge. Richard of York was killed at the
Battle of Wakefield in 1460, and in 1461 his son, King
Edward IV, appointed Germyn Lynch, goldsmith of London, to be his representative at Trim as warden and master worker of the new issues of moneys and coins within the Castles of Dublin and Trim, and the town of Galway.
Later ownership During the 15th century the
Irish Parliament met in Trim Castle seven times and a mint operated in the castle. It was at that time the centre of administration for Meath and marked the outer northern boundary of
The Pale. In the 16th century it fell into decline and was allowed to deteriorate, but it 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 Dunsany 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.
Restoration The
Office of Public Works began a major programme of exploratory works and conservation, costing in the region of 4.5 million euro, including partial restoration of the moat and the installation of a protective roof on the keep. The castle was re-opened to the public in 2000. ==Structure==