Flann O'BrienWritingNo biography available.Known For8.5The Brother19925.0At Swim-Two-Birds1997John Duffy's Brother2006Fan ClubNo Nerds have favorited Flann O'Brien yet — be the first.All fan clubsFrom NerdspinFilmographyWriting32006John Duffy's BrotherFilmWriter1997At Swim-Two-BirdsFilmNovel★ 5.01992The BrotherFilmWriter★ 8.5