Conceived as another chapter in the European history of religions (Europäische Religionsgeschichte), this book deals with the intense dynamics of the overlapping political, ethnic, and denominational constellations in Reformation and post-Reformation Transylvania. Navigating along multiple narrative tracks, and attempting to treat the religious history of an entire region – over a limited time period – in a differentiated, polyfocal way, the book represents a departure from the master narratives of any singularly oriented religious history. At the same time, the present work seeks to contribute to laying the groundwork at the micro- and meso-contextual level of East-Central European confessionalization processes, and to developing interpretive models for these processes in the region.