Dunamase or The Rock of Dunamase (Irish: Dún Másc "fort of Másc") is a rocky outcrop in the townland of Park or Dunamase, civil parish of Dysartenos, barony of Maryborough East, County Laois. The rock, 46 metres (151 ft) above a flat plain, has the ruins of Dunamase Castle, a defensive stronghold dating from the early Anglo-Norman period with a view across to the Slieve Bloom Mountains. It is near the N80 road between the towns of Portlaoise and Stradbally.
Archeological excavations in the 1990s demonstrated that the Rock was first settled in the 9th century when a hill fort or dún was constructed on the site. In 845 the Vikings of Dublin attacked the site and the abbot of Terryglass, Aed son of Dub dá Chrích, was killed there. There is no clear evidence of 10th–11th century occupation.
The castle was built in the second half of the 12th century. Who built it is not recorded, but Meiler Fitzhenry is the most likely candidate. Strongbow is another possibility, as it was he who controlled Leinster as heir of Dermot McMurrough. With the marriage of Strongbow's daughter and heir, Isabel, the castle passed into the hands of the Marshal family. William Marshal, who later became Regent of England in the minority of Henry III, had five sons, all of whom succeeded him in turn and died without issue. So in 1247 the Marshal lands were divided among William's five daughters. Dunamase fell to Eva Marshal and then to her daughter, Maud, who was married to Roger Mortimer. The castle remained in Mortimer hands until 1330 when another Roger Mortimer was executed for treason. By the time the Mortimer family was rehabilitated the castle seems to have passed out of the area under Norman control. There is no evidence that the castle was taken over and used by the local Irish lords and it seems to have become a ruinous shell by 1350.
Nor is there evidence that the castle was reoccupied in the 17th century. It played no part in the Cromwellian wars, except that it was blown up in 1650 to prevent it being used. In the later 18th century Sir John Parnell started to build a banqueting hall within the ruins and this work incorporated medieval architectural details taken from other sites in the area. It is these features which have led some writers[who?] to believe that there was a later medieval rebuild and reoccupation of the castle.
||This article includes a list of references, but its sources remain unclear because it has insufficient inline citations. (August 2013)|
- Hodkinson, Brian (2003). "A summary of recent work at the Rock of Dunamase, Co. Laois". In Kenyon, John R.; O'Conor, Kieran. The Medieval Castle in Ireland and Wales. Dublin: Four Courts Press. ISBN 9781851827268.
- Hodkinson, B.J. (2003). "The Sources for the History of Dunamase Castle". Laois Heritage Society Journal (1).
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