Matthew O'Neill, 1st Baron Dungannon Irish peer (1520–1558) Parents Alison Kelly Conn O'Neill, 1st Earl of Tyrone Children Cormac MacBaron O'Neill Hugh O'Neill, Earl of Tyrone Art MacBaron O'Neill Brian O'Neill, Baron Dungannon Siblings Shane O'Neill Mary O'Neill Phelim Caoch Ó Neill Conn O'Neill Henry 'Og' O'Neill Partners Joan Maguire