Clandeboye Clann Aodha Buidhe (Irish) | |||||||||||
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| 1295–1605 | |||||||||||
 Coat of arms
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 O'Neill of Clandeboye c. 1500 | |||||||||||
| Common languages | Irish | ||||||||||
| Government | Elective monarchy | ||||||||||
| King / Chief | |||||||||||
• 1295-1347 | Henry O'Neill (first) | ||||||||||
• 1618 | Conn O'Neill (last) | ||||||||||
| History | |||||||||||
• Established | 1295 | ||||||||||
• Disestablished | 1605 | ||||||||||
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| Today part of | United Kingdom | ||||||||||
Clandeboye or Clannaboy (Irish Clann Aodha Buí, "family of Hugh the Blond") was a kingdom of Gaelic Ireland, comprising what is now south County Antrim, north County Down, and the barony of Loughinsholin. The entity was relatively late in appearance and is associated partly with the Gaelic resurgence of the High Middle Ages. The O'Neill Clandeboy (Ó Néill Clann Aodha Buidhe) who reigned in the territory descended from Hugh Boy O'Neill, a king of Tyrone. His descendants took advantage of the demise of the Earldom of Ulster during the latter 14th century and seized vast portions of territory. Clandeboye's main seats of power were Shane's Castle and Castle Reagh.
The kingdom came to an end at the dawn of the 17th century after Conn O'Neill, the last head of the Clandeboye O'Neills of Upper Clandeboye, signed away two-thirds of his land to his close associates Hugh Montgomery and James Hamilton who proceeded to privately settle their land with settlers from Great Britain just prior to the larger Plantation of Ulster. Conn died in 1618. James Hamilton became the first Viscount Claneboye in 1622.