The editors have incurred many debts in the process of shepherding this volume from concept to printed book. They are grateful to the contributors, who shared their expertise on so many aspects of Cluniac monasticism; to the two external readers, who improved the articles with their generous reports; to Kate Hammond and Alessandra Giliberto at Brill for their editorial and practical guidance as the volume came together; to Theo Riches, who translated one of the contributions from German into English; to Susan Boynton, who translated four of the contributions from French into English; and to Sheila Bonde and Clark Maines for providing invaluable advice on the rendering of some of the technical terminology in Anne Baud’s article in English. The editors would also like to thank Professor Giles Constable, who was instrumental in supporting both of their careers and with whom they spent many hours discussing the lineaments of this volume before his death in January 2021. Giles’ unrivalled contributions to Cluniac studies have left their mark on almost every article in this book. It is only fitting that we dedicate this companion to Cluny to his memory.