Cracroft's Peerage
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O'Neill, Viscount (I, 1795 - 1855)


Creation: let.pat. 3 Oct 1795


Extinct: 12 Feb 1855


Family name: O'Neill




See Earl O'Neill



John [O'Neill], 1st Baron O'Neill later 1st Viscount O'Neill, PC

1st son and heir of Charles O'Neill, of Shane's Castle, co. Antrim, by his wife Alice Brodrick, 3rd dau. and cohrss. of Rt Hon St John Brodrick, of Midleton, co. Cork




18 Oct 1777 Hon Henrietta Boyle (b. c. 1756; d. 3 Sep 1793), only dau. and hrss. of Hon Charles Boyle, styled Viscount Dungarvan (by his wife Susanna Hoare, dau. and cohrss. by his second wife of Henry Hoare, of Stourhead, co. Wiltshire), 1st son and heir ap. by his first wife of John [Boyle], 5th Earl of Cork


1. Hon Charles Henry St John O'Neill, later 2nd Viscount O'Neill later 1st Earl O'Neill

2. Hon John Bruce Richard O'Neill, later 3rd Viscount O'Neill


17 Jun 1798


25 Oct 1793 Baron O'Neill, of Shane's Castle in the County of Antrim

3 Oct 1795 Viscount O'Neill

suc. by



Member of Parliament for Randalstown 1761-83 and for co. Antrim 1783-93; Privy Councillor [I] 1780


Charles Henry St John [O'Neill], 2nd Viscount O'Neill later 1st Earl O'Neill, KP PC


Aug 1800 Viscount Raymond and Earl O'Neill


The Viscountcy of O'Neill was held by the 1st Earl O'Neill from Aug 1800 until his death on 25 Mar 1841, when the Earldom of O'Neill became extinct and the viscountcy passed to his brother,


John Bruce Richard [O'Neill], 3rd Viscount O'Neill


30 Dec 1780


12 Feb 1855


entered the Army as Ensign, Coldstream Guards 1799 and Capt 1800; Capt, 18th Light Dragoons 1804; Major, 19th Light Dragoons 1807; Lt Col, Chasseurs Britanniques 1808, 19th Light Dragoons 1810, and Coldstream Guards 1816; Col in the Army 1814, Maj General 1825, Lieut General 1838 and General 1854; Member of Parliament (Conservative) for co. Antrim 1802-41; Constable of Dublin Castle 1811-55; Vice-Admiral of Ulster; a Representative Peer for Ireland 1843-55


On the death of the 3rd Viscount O'Neill the Viscountcy of O'Neill became extinct. The O'Neill estates passed to his second cousin twice removed, Rev William Chichester later O'Neill, who in 1868 was created Baron O'Neill.


 First written 28 Oct 2004



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