kingdom · British Isles
Lordship of Clandeboye
Origins
The Clann Aodha Buidhe, descendants of Aodh Buidhe O'Neill, a 13th century king of Tir Eoghain, moved east across the Bann after the collapse of the Earldom of Ulster in 1333. By around 1350 they ruled much of south Antrim and north Down, later divided into Upper and Lower Clandeboye.
Rule and society
The lordship's seat was the castle at Castlereagh near Belfast, and its chiefs ruled through Gaelic law, cattle wealth and Scottish gallowglasses. Their territory was later contested by the MacDonnells and by English colonisation attempts, including the Earl of Essex's massacre of Sir Brian MacPhelim O'Neill and his family in 1574.
Decline and legacy
Con O'Neill, the last lord, lost most of his lands to the Scots Hugh Montgomery and James Hamilton in 1605, opening north Down to large-scale Scottish settlement.
Lineage
On the connections map
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- Earldom of Ulster was conquered by Lordship of Clandeboye1333 CE – 1350 CE
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Cite this page
- APA
- The Epoch Institute. (2026). Lordship of Clandeboye. In The Epoch Institute States Register. https://the-epoch-institute.org/state/lordship-of-clandeboye
- MLA
- “Lordship of Clandeboye.” The Epoch Institute States Register, The Epoch Institute, 2026, https://the-epoch-institute.org/state/lordship-of-clandeboye. Accessed .
- Chicago
- The Epoch Institute. “Lordship of Clandeboye.” The Epoch Institute States Register. 2026. https://the-epoch-institute.org/state/lordship-of-clandeboye.
- Harvard
- The Epoch Institute (2026) ‘Lordship of Clandeboye’, The Epoch Institute States Register. Available at: https://the-epoch-institute.org/state/lordship-of-clandeboye (Accessed: ).
Last reviewed October 2026Random state ↻