Donough O'Brien, 2nd Earl of Thomond

Donough O'Brien, 2nd Earl of Thomond (Irish: Donnchadh Ó Briain; died 1 April 1553), also known as "the fat",[1] was the son of Connor O'Brien, King of Thomond and Annabell Burke. He inherited the earldom from his uncle, Murrough O'Brien, by special remainder.[2]

Donough O'Brien
2nd Earl of Thomond & Baron Ibrackan
Died	1 April 1553
Noble family	Ua Briain
Spouse(s)	Helen Butler
Issue Margaret O'Brien Connor O'Brien, 3rd Earl of Thomond Donal O'Brien Honora O'Brien
Father	Connor O'Brien, King of Thomond
Mother	Annabell Burke

O'Brien married Helen Butler, daughter of Piers Butler, 8th Earl of Ormonde and Lady Margaret Fitzgerald. He died on 1 April 1553, after being attacked by his brothers at the family seat of Clonroad. O'Brien's brother Donald was named king of Thomond by the Dalgais, but O'Brien's son, Connor, allied himself with the English and regained control of his lands.[3]

Children of Donough O'Brien and Helen Butler:

• Margaret O'Brien (d. 1568) married Dermod O'Brien, 2nd Baron Inchiquin [she was (also) married to the 2nd Earl of Clanricard according to the Wikipedia entry for him: Richard Burke, 2nd Earl of Clanricarde
• Connor O'Brien, 3rd Earl of Thomond (c. 1534 – 1581)
• Donal or Daniel
• Honora married Teige Macnamara

O'Brien also fathered an illegitimate daughter, Mary, who married Theobald Burke, son of William Burke, 1st Baron Bourke of Castleconnell.

References

1. Cokayne, George Edward, ed. (1896). Complete peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, extant, extinct or dormant (S to T). 7 (1st ed.). London: George Bell & Sons. p. 391. Retrieved 28 December 2011.
2. Chisholm, Hugh, ed. (1911). "Thomond, Earl and Marquess of" . Encyclopædia Britannica. 26 (11th ed.). Cambridge University Press. p. 869.
3. O'Donoghue, John (1860). Historical memoir of the O'Briens: with notes, appendix, and a genealogical table of their several branches. Hodges, Smith, & Co. pp. 187–188. Retrieved 28 December 2011.

Further reading

• Lodge, John; Archdall, Mervyn (1789). The peerage of Ireland: or, A genealogical history of the present nobility of that kingdom. 2. Dublin: James Moore. pp. 27–30. Retrieved 28 December 2011.