C.H. Lawrence was Professor Emeritus of the University of London, UK. His previous publications include St Edmund of Abingdon (1960), Matthew Paris and St Edmund (1996), The Friars: The Impact of the Mendicant Orders on Medieval Society (2001) and The Letters of Adam March (ed. and translated 2006-10).

Janet Burton is Professor of medieval history at the University of Wales Trinity Saint David, UK. Her previous publications include Historia Selebiensis Monasterii: The History of the Monastery of Selby (2013), Monastic Wales: New Approaches, ed. with Karen Stöber (2013), The Regular Canons in the British Isles in the Middle Ages, ed. with Karen Stöber (2011) and, with Julie Kerr, The Cistercians in the Middle Ages (2011). She is joint general editor of the Journal of Medieval Monastic Studies (Brepols).