Art MacBaron O'Neill (died 1618) (d. 1618) Parents Matthew O'Neill, 1st Baron Dungannon Children unknown daughter O'Neill Owen Roe O'Neill Art 'Og' O'Neill Con 'Roe' O'Neill Brian MacArt O'Neill Alice O'Neill Siblings Brian O'Neill, Baron Dungannon Cormac MacBaron O'Neill Hugh O'Neill, Earl of Tyrone