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O'Brien was the surname of a wizarding family of unknown blood status.

Known family members[]

Etymology[]

O'Brien is an Anglicised form of the Irish Gaelic surname Ó Briain, meaning "descendant of Brian."[3] Brian is an Irish male given name thought to derive from the Celtic element bre, meaning "hill," or, by extension, "high" or "noble."[4]

Appearances[]

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