Everything you need to know about the Irish surname O'Brien - its meaning, origins, interesting facts and famous people with the last name O'Brien.

Irish derivation of O'Brien:

Ó Briain.

Name meaning of O'Brien:

 "Descendant of Brian (Boru)."

Counties associated with the name O'Brien:

Cork, Clare, Donegal, Dublin, Fermanagh, Kilkenny, Limerick, Meath, Tipperary, Wexford, and Wicklow.

O'Brien Coat of Arms motto:

"The strong hand from above."

Looking for more on your Irish surname? Visit our Irish clans and surnames page here. 

Interesting Facts about the Irish family name:

- Queen Elizabeth II's maternal eighth great grand-mother was an O'Brien. 

- Emerged as chiefs of the Dalcassian races from the south-west of Ireland. 

- Founded by Brian Boru.

Some famous O'Briens:

- Conan O'Brien (b.1963, US comedian and talk show host)

- Soledad O'Brien (b.1966, journalist)

- Mick O'Brien (b.1961, traditional Irish musician)

- Miles O'Brien (b.1959, journalist and CNN anchor)

- Richard O'Brien (b.1942, actor and writer of cult hit 'Rocky Horror Picture Show')

Are you an O'Brien? Done some family research on your name? Let us know what you've found, or just say hello to your fellow O'Briens, in the comments section, below. 

Looking for more on your Irish surname? Visit our Irish clans and surnames page here. 

Here are some interesting facts about the Irish last name O'Brien, including its history, family crest, coat of arms, and famous clan members.