Save Type Surname (from given name) Usage Irish Meaning & HistoryExpand Links From the Irish Ó Briain meaning "descendant of Brian". Related NamesDetails VariantsÓ Briain, O'BrianOther Languages & CulturesBryan, Bryant(English) Categories Ashita no Nadja characters, child actors, comedians, Doctor Who actors, guitarists, isograms, Italian Westerns, Star Trek characters