This book analyzes particular patterns of nationalist self-configuration and nationalist uses of memory, counter-memory, and historical amnesia in Ireland from roughly around the time of the emergence of a broad-based non-sectarian Irish nationalist platform in the late eighteenth century (the Society of United Irishmen) until Ireland’s partition and the founding of the Irish Free State in 1922. In approaching Irish nationalism through the particular historical lens of “Iran,” this book underscores the fact that Irish nationalism during this period (and even earlier) always utilized a historical paradigm that grounded Anglo-Irish encounters and Irish nationalism in the broader world history, a process that I term “worlding of Ireland.” In effect, Irish nationalism was always politically and culturally cosmopolitan in outlook in some formulations, even in the case of many nationalists who resorted to insular and narrowly defined exclusionary ethnic and/or religious formulations of the Irish “nation.” Irish nationalists, as nationalists in many other parts of the world, recurrently imagined their own history either in contrast to or as reflected in, the histories of peoples and lands elsewhere, even while claiming the historical uniqueness of the Irish experience. Present in a wide range of Irish nationalist political, cultural, and historical utterances were assertions of past and/or present affinities with other peoples and lands.