Like other Catholic communities under Protestant jurisdiction, the Irish, initially with Spanish assistance, provided itself with the means of educating at least some of its clergy and a small number of laity. Traditionally, the resulting Irish colleges’ network has been understood almost exclusively as the product of the religious reform of the sixteenth century and of the phased English conquest of the island. Unsurprisingly, this resulted in a narrow view of their significance. It concentrated largely on the priest-producing aspect of their activities, to the neglect of their social, economic and cultural roles. This narrowness of approach has been a concern for a new generation of historians. Conscious of the social function of these institutions, some have tried to reintegrate the colleges into comprehensive, source-based explorations of their originating and target communities. This is now yielding more satisfactory accounts of their significance. Of particular importance has been work on the various roles played by the colleges in facilitating Catholic migration to the continent and in maintaining a Catholic pastoral infrastructure in Ireland in the seventeenth and eighteenth centuries. More recent studies have revealed how the colleges’ role changed over time and varied geographically and socially. It is now becoming clear how much their continued existence depended on their capacity to respond to alterations in the geo-political contexts that originally brought them into being. The relative decline of Spain in the early seventeenth century, the dominance of France from the 1660s and, perhaps most importantly, the growth of the British Empire after the 1690s crucially influenced the nature and role of the colleges. So too did directives from continental hierarchies and from Rome, frequently issued in response to endless collegial infighting. Even more significant, however, was the rapidly changing economic and political status of the Catholic communities in Ireland, to which the colleges had been providing clergy, and other services, since the 1590s. In the second half of the eighteenth century the demands, needs and aspirations of the emergent Catholic interest in Ireland posed a challenge that eventually overawed college administrations. Although European secularization and the French Revolutionary Wars were the occasion for their closure, it was the altered relationship between Irish Catholics and the imperial government that rendered the traditional role of continental colleges redundant. With growing opportunities in the imperial armies, the European connection in general was relatively less important for Irish Catholics. At the same time, the freedom to establish domestic seminaries provided the Irish hierarchy with convenient alternatives to the continental colleges, which, even in their heyday, had often seemed more trouble that they were worth. Few continental colleges re-established themselves in the nineteenth century. Those that did were only shadows of their former selves.