A four-part series on The Irish Colleges is currently (March 2015) being shown on BBC2 NI. For those who have access to the BBC iPlayer, it is also available there.
1592 was a pivotal year for Irish philosophy, the year it split along sectarian lines. In that year after decades of wrangling the University of Dublin was founded, along with its first (and only) college, Trinity College Dublin. However it was open only to those who accepted Elizabeth I as the head of the Church. Oxford and Cambridge were already effectively closed to Irish Catholics since graduands had to swear the Oath of Supremacy. This was only part of laws aimed at stamping out Catholicism in the kingdoms she ruled. In 1592 on a visit to Oxford, which was still a hotbed of Catholicism, Elizabeth I made clear in a speech that the requirement for the oath would not be relaxed.