Battlefields›Battle of Castledermot
Early Medieval

Battle of Castledermot

908
Kildare, Ireland
Also known as: Battle of Dún Masc
Era
Early Medieval
Battle Type
Pitched Battle
Location
Kildare, Ireland
Status
Unregistered
The Combatants

Who Fought

Defeated
Munster (Cormac mac Cuilennáin)
Forces
Munster under Cormac c.4,000–7,000.
VS
Victor
Leinster and Norse of Waterford
Forces
Leinster and Waterford Norse c.3,000–6,000
Outcome
Decisive defeat; Cormac mac Cuilennáin killed
The Battle

History & Significance

One of the most significant battles of 10th-century Ireland. Cormac mac Cuilennáin, the warrior-bishop-king of Munster, was killed. His death ended Munster's bid for hegemony and opened decades of Uí Néill dominance. The Lebor na Cert (Book of Rights) is attributed to Cormac.

Casualties & Losses

Cormac mac Cuilennáin and many nobles killed

Questions & Answers

Frequently Asked Questions

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