Rock of Dunmase References Images Rock of Dunmase rock formation, Ireland Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Port LaoiseThe Rock of Dunmase, just to the east, was the seat of the ancient kings of Leinster. Pop. (2006) 3,281; (2011) 3,639. Read MoreThe Rock of Dunmase, just to the east, was the seat of the ancient kings of Leinster. Pop. (2006) 3,281; (2011) 3,639. Read More