Clonalis House

Clonalis, outside the town of Castlereagh in County Roscommon, is the ancestral home of the O’Conor family, descendants of Ireland’s last High Kings and traditional Kings of Connacht. The estate has been in the continuous possession of the family for over 1500 years and many people still regard it as the last remnant of the ancient Kingdom of Connacht. The present house was built by Charles Owen O’Conor Don in 1878 to replace a now ruined late 17th century house.

Address & Contact

Clonalis House, Castlerea, Roscommon

t: +353 94 9620014



Available as a Film Location

Houses and Garden

Individual House Visits

Groups by Arrangement

Culture and Education


Concerts, Plays or Recitals

Accommodation and Short Breaks

Overnight with Dinner

Holiday Cottages

Opening Details

Tour opening dates – 21st June – 31st August

Closed Sundays 


Open for overnight guests/residents – April 1st – 30th September


Self-Catering cottages open all year round