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Gender: M Meaning of O'brien: "descendant of Brian" Origin of O'brien: Irish

The use of O-prefixes could create the next wave of Irish-inflected names, offering an innovative way of honoring a relative with the old-fashioned moniker Brian. On Downton Abbey, the surname O'Brien was heard so often, it began to seem like a first.

Famous People Named O'brien

Pop Culture References for the name O'brien

Star Trek character Miles O'Brien

O'brian, O'bryan