Kriston R. Rennie is Senior Lecturer in Medieval History at The University of Queensland, Australia. His research specializes in church councils, canon law, and the history of papal legation. He is the author of The Collectio Burdegalensis: A Study and Register of an Eleventh-Century Canon Law Collection (PIMS, 2013) and Law and Practice in the Age of Reform: The Legatine Work of Hugh of Die (1073–1106) (Brepols, 2010), in addition to numerous articles and book reviews.