Clan O'Brien
Find Clan O'Brien's checked website and Council-listed chief or representative, with sources.
| Clan connection | O'Brien |
|---|---|
| Council lists | NoneNot on the Clans of Ireland Register of Clans 2026 and no active registered clan body found. Dromoland Castle's official history states the castle was the ancestral home of the O'Briens, back to High King Brian Ború; seat of the Barons of Inchiquin, Newmarket-on-Fergus, Co. Clare. |
| Society | Society not verified |
| Official website | Visit organisation |
| Membership | Ask about joiningEligibility and dues are set by each organisation. |
| Gatherings | Next date not verifiedAsk the society before making plans. |
| More sources | Council source |
| Source check | October 10, 2026Research snapshot, not a live feed. |
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Your O'Brien questions, answered
Does my surname belong to Clan O'Brien?
A surname can be a lead, not proof of descent. This profile does not yet have a verified clan-specific sept list. Check your family records and ask the society about its associated names. Council surname guide
What is the O'Brien tartan?
A clan-specific tartan description has not been verified for this profile yet. Search the Scottish Register of Tartans by clan or family name and check alternative spellings. Register guidance
What is Clan O'Brien's motto?
The motto has not been verified for this record yet. We do not substitute an unsourced motto.
How do I join a O'Brien society?
Start with the linked organisation and ask about eligibility, local branches and current dues. Its membership policy has not been audited in this record. Membership source
When is the next O'Brien gathering?
No dated next gathering has been verified for this record. Ask the organisation rather than reuse an old festival date.
Is there a Clan O'Brien coat of arms I can use?
The Court of the Lord Lyon says a clan cannot have a coat of arms. The chief's arms belong to the chief; a clan member may use the chief's crest in a belt-and-buckle badge. A shared surname does not give you the chief's personal arms. Lord Lyon guidance
Can I wear the tartan without joining?
The Scottish Register of Tartans says there are no laws about which tartan you may wear, only traditions. Membership and ancestry are separate questions. Register guidance