O'Brien baronets

There have been four baronetcies created for persons with the surname O'Brien, one in the Baronetage of Ireland and three in the Baronetage of the United Kingdom.

The O'Brien Baronetcy, of Leaghmenagh in the County of Clare, was created in the Baronetage of Ireland on 9 November 1686. For more information on this creation, see the Baron Inchiquin.

The O'Brien Baronetcy, of Merrion Square in Dublin and Boris-in-Ossory in Queen's County, was created in the Baronetage of the United Kingdom on 25 September 1849 for Timothy O'Brien. He was a merchant, Lord Mayor of Dublin and Liberal Member of Parliament for Cashel. The second Baronet represented King's County in the House of Commons as a Liberal for over thirty years. The third Baronet was a Deputy Lieutenant of County Cork. As of 2007 the presumed seventh and present Baronet has not successfully proven his succession and is therefore not on the Official Roll of the Baronetage, with the baronetcy considered dormant. For more information, follow this link.

The O'Brien Baronetcy was created in the Baronetage of the United Kingdom on 28 September 1891. For more information on this creation, see the Baron O'Brien.

The O'Brien Baronetcy was created in the Baronetage of the United Kingdom on 15 January 1916. For more information on this creation, see the Baron Shandon.

O'Brien baronets of Leaghmenagh (1686)

see Baron Inchiquin

O'Brien baronets, of Merrion Square and Boris-in-Ossory (1849)

Sir Timothy O'Brien, 1st Baronet (1787–1862)
Sir Patrick O'Brien, 2nd Baronet (1823–1895)
Sir Timothy Carew O'Brien, 3rd Baronet (1861–1948)
Sir Robert Rollo Gillespie O'Brien, 4th Baronet (1901–1952)
Sir John Edmond Noel O'Brien, 5th Baronet (1899–1969)
Sir David Edmond O'Brien, 6th Baronet (1902–1982)
- John David O'Brien (1928–1980)

The baronetcy is presently considered Dormant as the present holder has not proven his claim to the title.^[1]

Timothy John O'Brien, presumed 7th Baronet (born 1958), grandson of the 6th Baronet

The heir presumptive to the 7th Baronet is the second and youngest son of the 6th Baronet, James Patrick O'Brien (born 1964).

O'Brien baronets (1891)

see Baron O'Brien

O'Brien baronets (1916)

see Baron Shandon

Notes

↑ "Official Roll of the Baronetage (as at December 31st 2012". Standing Council of the Baronetage.

References

Kidd, Charles, Williamson, David (editors). Debrett's Peerage and Baronetage (1990 edition). New York: St Martin's Press, 1990,
Leigh Rayment's list of baronets

Ó Briain

General	High Kings of Ireland Kings of Munster Kings of Thomond Kings of Dublin Kings of Mann and the Isles Earl of Thomond Viscount Clare Baron Inchiquin O'Brien baronets Clare's Dragoons Composition of Thomond

Ó Briain	Brian Bóruma Donnchad mac Briain Tadc mac Briain Murchad mac Donnchada Toirdhealbhach Ua Briain Muircheartach Ua Briain Domnall mac Taidc Domnall Gerrlámhach Diarmait Ua Briain Conchobar Ua Briain Bé Binn Ní Briain Brian Ua Briain Toirdelbhach mac Diarmaida Ó Briain Muircheartach mac Toirdelbhach Ó Briain Domhnall Mór Ó Briain Muircheartach Finn Ó Briain Conchobhar Ruadh Ó Briain Donnchadh Cairprech Ó Briain Conchobhar na Suidaine Ó Briain

Ó Briain Clann Brian Ruadh	Brian Ruadh Ó Briain Donnchadh mac Brian Ruadh Ó Briain Diarmuid Cléirech Ó Briain Donnchadh mac Domhnall Ó Briain Brian Bán Ó Briain

Ó Briain Clann Tadhg	Tadhg Cael Uisce Ó Briain Toirdelbach Ó Briain Donnchadh mac Toirdelbach Ó Briain Muircheartach Ó Briain Diarmuid mac Toirdelbach Ó Briain Mathghamhain Maonmhaighe Ó Briain Brian Sreamhach Ó Briain Toirdelbhach Maol Ó Briain Conchobhar mac Mathghamhna Ó Briain Tadhg an Glemore Ó Briain Mathghamhain Dall Ó Briain Toirdelbhach Bóg Ó Briain Tadhg an Chomhaid Ó Briain Donnchadh mac Mathghamhna Ó Briain Conchobhar na Srona Ó Briain Toirdelbhach Óg Ó Briain Toirdelbhach Donn Ó Briain Conchobhar mac Toirdhealbaig Ó Briain Murchadh Carrach Ó Briain

Ó Briain Tuamhain	Donough I O'Brien Connor O'Brien Donough II O'Brien Henry I O'Brien Barnabas O'Brien Henry II O'Brien Henry Ibrackan O'Brien Henry Horatio O'Brien Henry III O'Brien

Ó Briain Chláir	Daniel I O'Brien Connor O'Brien Daniel II O'Brien Daniel III O'Brien Charles I O'Brien Charles II O'Brien Charles III O'Brien

Ó Briain Inse Uí Chuinn	Dermod I O'Brien Murrough I McDermot O'Brien Murrough II O'Brien Dermod II O'Brien Murrough III O'Brien William I O'Brien William II O'Brien William III O'Brien James O'Brien Edward Dominic O'Brien Murrough IV O'Brien William IV O'Brien James O'Brien

Ó Briain Drom Ólainn	Donough O'Brien Edward I O'Brien Lucius I O'Brien Edward II O'Brien William Smith O'Brien Lucius II O'Brien Edward Donough O'Brien Lucius William O'Brien Donough Edward Foster O'Brien Pádraig Lucius Ambrose O'Brien Conor Myles John O'Brien

Places	County Clare County Limerick Dromoland Castle

Kinsmen	MacMahon MacConsidine MacLysaght O'Crotty

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