Trinity College Dublin: One of Ireland’s most prestigious universites.Trinity College (Irish: Coláiste na Tríonóide), officially the College of the Holy and Undivided Trinity of Queen Elizabeth near Dublin, is the sole constituent college of the University of Dublin, a research university located in Dublin, Ireland. The college was founded in 1592 by Queen Elizabeth I as “the mother of a university” that was modeled after the collegiate universities of Oxford and Cambridge, but unlike these affiliated institutions, only one college was ever established; as such, the designations “Trinity College” and “University of Dublin” are usually synonymous for practical purposes.