You Are Here: Home | Provinces | Munster | O’Dea castle

O’Dea castle

Erected in 1480, Dysert O’Dea castle is at the former O’Dea stronghold at Dysert O’Dea, near Corofin in County Clare. In 1594 the Bishop of Kildare at the time, Daniel O’Neylan, acquired the surrounding lands of the castle. The Bishops grandson, Daniel and his wife Máire "Rua" ní Mahon went on to inhabit the castle during their lifetimes.

Then, in 1670 their son William O'Neylan (1635-78) tried to regain the castle by force following its confiscation by the British via the Act of Settlement. William was then arrested, tried and convicted, however he petitioned his kinsman, the 3rd Earl of Inchiquin, who was interested in the property because his powerful family also claimed a right to it. Lord Inchiquin found in William’s favor and a 1676 deed and William’s 1678 will describe him as “William Nelane of Disart” and “Captain William Neylan of Disert” respectively. His son Francis Patrick O'Neylon (also written O'Neillan) was born in the castle in 1671 but like many Catholics who had been disposessed of their lands by the British left Ireland to seek his fortune overseas. He rose through the ranks of the Austrian Imperial Army and in 1731 was awarded command of the 57th "O'Neillan" Infantry Regiment. Patrick reached the rank of Major General and was created a Baron by Emperor Charles VI. His death came upon him in the year of 1734.

On May 10 1318, the Battle of Dysert O’Dea took place. This seen the Anglo-Normans driven from the region for over 200 years, this battle came about through the Irish Bruce Wars which lasted from 1315-1318.

The castle is an important part of ancient Irish history with its amount of historical remains that it claims. Today the castle is now an archaeological center with more than twenty-five archaeological and historical sites. Aspects of the castle which show this, is the two stone forts which were used in battles in the 16th century and the Saint Tola’s High Cross which dates from the 12th century. There is also an example of a fulacht fiadh, which is an ancient cooking site.


Recommended books on Castles, available from Amazon.

Medieval Castles of Ireland
Great Irish Houses & Castles
If Walls Could Talk: Great Irish Castles Tell Their Stories
Castles in Ireland: Feudal Power in a Gaelic World