JANET BURTON is Professor of Medieval History at University of Wales Trinity Saint David, Lampeter and the author of many books and articles on monastic history. Ian Forrest is professor of social and religious history at the University of Oxford. Professor Philippa Hoskin is Gaylord & Dorothy Donnelley Fellow Librarian, Corpus Christi College, and Keeper of the Parker Library, University of Cambridge. She is also General Editor of the Lincoln Record Society. RICHARD CASSIDY studied history as an undergraduate at St Catherine's College, Oxford, in the 1960s. After retirement from a career in the gas industry, he returned to history, with an MA and PhD in medieval history at King's College, London. His PhD thesis 'The 1259 Pipe Roll' is the basis for an edition of that roll to be published by the Pipe Roll Society. Since completing his doctorate in 2012, he has published several articles on thirteenth-century royal finance and administration. He has also written a book, Approaching Pipe Rolls: The Thirteenth Century, to be published by Routledge in the Approaching Medieval Sources series