OBrien [family name]
Members of the historic OBrien family listed in the (Old) Dictionary of National Biography - many listed separately here.
- Tighearhach OBrien [O’Braien] (d.1088), annalist and abbot of Clonmacnoise.
- Barnabas OBrien (d.1657), 6th Earl of Thomond.
- Brian Ruadh OBrien (d.1276), king of Thomond.
- Charles OBrien (d.1706), fifth Viscount Clare.
- Charles OBrien (1699-1761), sixth Viscount Clare.
- Conchobar OBrien (d.1267), kind of Thomond.
- Conor OBrien (d.1539), prince of Thomond, succeeded 1528.
- Conor OBrien (1534-1581), third Earl of Thomond.
- Daniel OBrien (1577-1663), first Viscount Clare.
- Daniel OBrien (d.1690), third Viscount Clare.
- Domhnall OBrien (d.1194), king of Munster.
- Donat Hency OBrien (1785-1857), rear-admiral.
- Donogh Cairbrech OBrien (d.1242), king of Thomond.
- Donough OBrien (d.1064), king of Munster, deposed and died in Rome.
- Donough OBrien (d.1624), Baron of Ibrickan and fourth Earl of Thomond.
- Edward OBrien (1808-1840), br. William Smith OBrien [see infra].
- Henry OBrien (1808-1835), author of The Round Towers of Ireland (1834) [see infra].
- James OBrien (1769-1855), third Marquis of Thomond and seventh Earl of Inchiquin.
- James Bronterre OBrien (1805-1864), Chartist.
- James Thomas OBrien (1792-1874), Protestant bishop of Ossory, Ferns, and Leighlin.
- John OBrien (d.1767), Catholic vicar-gen. of Cork, Cloyne and Ross.
- Sir Lucius Henry OBrien (d.1795), free-trade MP in Irish Parliament.
- Matthew OBrien (1814-1855), mathematical lecturer at Kings College, London.
- Murrough OBrien (1614-1674), first Earl of Inchiquin and sixth Baron Inchiquin, of the conflagrations, accompanied Strafford into Leinster, 1641.
- Murtogh OBrien (d.1?19), king of Munster.
- Patrick OBrien [under Cotter].
- Paul OBrien (?1750-1820), prof. of Irish, Maynooth.
- Terence [or Toirdhelbhach] OBrien (d.1460), bishop of Killaloe.
- Terence Albert OBrien (1600-1651), bishop of Emly, party of Rinuccini, nursed sufferers in Limerick, hanged by Ireton.
- Turlough OBrien (1009-1086), king of Munster.
- William OBrien (1638-1692), second Earl of Inchiquin, headed Munster Protestants against Catholics, 1689; governor of Jamaica.
- William OBrien (d.1815), actor and dramatist.
- William Smith OBrien (1803-1864), Young Ireland rising leader, 1848.
Bibl: John ODonoghue [1812-1893], Historical Memoir of the OBriens; Origin and history of the O'Brien Clan (Dublin: Hodges, Smith & Co. 1860), and Do. [rep. edn.] (Ruan, Co. Clare: M. Breen ), xxxii, 551, xvi p.,  p. of plates : ill. [some col.; ports, geneal. tables; 24 cm.]
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