‘Uproot and destroy, build and plant’: legatine authority under Pope Gregory VII

Confronted with the need for scholarly criteria in properly defining the ad hoc papal institution existent under Pope Gregory VII (1073–85), this paper seeks to clarify the title, office, and jurisdiction of the eleventh-century reforming legate. Discussing the Roman origins of this office through to the twelfth century – taking into account the political, ecclesiastical and legal constraints of the period – questions are raised concerning the extent and nature of legatine authority (especially as the reformers understood it). Contemporary criteria are unclear, but modern scholars can infer some regularities from Gregory VII's Register and other contemporary sources as to how this office operated in the last quarter of the eleventh century, and ultimately, to understand more clearly how reform was being implemented in the provinces.