Brian O'Neill, Baron Dungannon

Brian Ó Néill, Baron Dungannon was an Irish aristocrat of the Elizabethan era. He was part of the O'Neill dynasty, a powerful Gaelic family in Ulster. Brian's father was Matthew O'Neill, 1st Baron Dungannon who had been given his title by Henry VIII as part of the surrender and regrant policy. Matthew was assassinated by his half-brother and rival Shane O'Neill in 1558. Shane tried to have the government recognise Matthew and his sons as illegitimate, but they continued to be supported by the Viceroy the Earl of Sussex in Dublin.