Identity Statement for Donough O’Brien

  • Reference code: IE UCDA LA29
  • Title: Papers of The Hon. Donough O’Brien (1879-1968)
  • Dates: 1939
  • Level of description: Item
  • Extent: c.40 genealogical tables and certificates of pedigree
  • Context
  • Content and Structure
  • Conditions of Access and Use

Biographical History

The O’Briens of Dromoland are direct descendants of Brien Boru, the last High King of Ireland (d.1014). Originally a Dalcassian clan, known as the Ui Toirdealbhaigh, they became prominent with the rise of Brien and took his name as their surname after his death. The O’Brien sept had three main branches: the Earls and Marquises of Thomond, the Barons and Earls of Inchiquin and the Viscounts of Clare. The Barons Inchiquin moved to Dromoland Castle in the seventeenth century and remained there until 1962, when it was refurbished as a hotel. The line continues to the present day.


Scope and Content

Genealogical table of the Descendants of Milesius, King of Spain & King of Ireland, BCE 1284 in which is shown the pedigree of the O’Brien family from the accession of the king to 1938, a period of 3022 years. Manuscript genealogies compiled by the Hon. Donough O’Brien, 4th son of the 14th Baron Inchiquin, and presented to the National University of Ireland.


  • Access: Available by appointment to holders of a UCD Archives reader's ticket. Produced for consultation in original format. Original material will be retrieved at 11am and 2pm only.
  • Language: English