The University of Dublin (Ollscoil Átha Cliath in Irish), corporately designated the Chancellor, Doctors and Masters of the University of Dublin (since the nineteenth century), located in Dublin, Ireland, was effectively founded when in 1592 Queen Elizabeth I issued a charter for Trinity College, Dublin, as "the mother of a university" – this date making it Ireland's oldest operating university. Unlike the universities of Oxford and of Cambridge, after which the University of Dublin was modelled and both of which comprise several constituent colleges, there is just one Dublin college: Trinity College. Thus the designations "Trinity College Dublin" and "University of Dublin" are usually synonymous for practical purposes. The University of Dublin is a member of Irish Universities Association and the Coimbra Group, a network of leading European universities. The University of Dublin was modelled on University of Oxford and University of Cambridge in the form of a collegiate university, Trinity College being named by the Queen as the mater universitas ("mother of the university").