Your Clan

The O’Brien dynasty (Irish: Uí Briain or Ua Briain; Modern: Ó Briain) are a royal and noble house founded in the 10th century by Brian Boru of the Dál gCais or Dalcassians. After becoming King of Munster, through conquest he established himself as High King of Ireland. Brian’s descendants thus carried the name O’Brien.

This site, and the clan, were formed to promote the interests of all O’Briens (O’Briain, O’Brian, O’Briant, O’Breen, O’Bryen, O’Bryon, O’Bryan, O’Bryant, Bryan, Bryant, Bryen, Brian, Brien, Briend, Briens, Brine, Brion, MacBrien, MacBryen, McBrian, McBrien, McBryen and other fine families) who are descended from our progenitor, Brian Boru.

The O’Brien

Conor O’Brien, The O’Brien, Prince of Thomond, Chief of the Name, The 18th Baron Inchiquin, 10th Baronet of Leamaneh, was responsible for the formation of the O’Brien Clan Association, and the First Clan Gathering in over 400 years, in 1992. He formed “The O’Brien Clan Foundation” worldwide and this was launched in the USA on 17th March 1998.

Conor Myles John O’Brien was born in Surrey, England on 17th July 1943, the son of the youngest son of 15th Baron Inchiquin, The Hon. Fionn Myles Maryons O’Brien who married Josephine Bembaron in 1939. He has one sister, Fiona, who is married to Romano Obert de Thieusies. He became Chief and Peer on the death of his uncle Phaedrig, the 17th Baron on 20th May 1982. He lives on Dromoland Estate in Thomond House, which is next to Dromoland Castle.

The Board of Directors

The website, the foundation, and many events and ambitions are managed by a Board of Directors comprised of O’Briens from around the world. To contact the board with suggests, ideas, or questions, visit here.