The late W. MARK ORMROD was Professor Emeritus of History at the University of York; he published extensively on later medieval history. Christopher Dyer is Emeritus Professor of History at the University of Leicester. He has written, edited, co-authored and co-edited many books, including William Dugdale, Historian, 1605-1686: His Life, his Writings and His County (Boydell, 2009). The late Derek Pearsall was Emeritus Gurney Professor of Middle English Literature at Harvard University; he wrote extensively on Chaucer, Gower, Langland and Lydgate, including biographies of Chaucer and Lydgate, an edition of the C-text of Langland's Piers Plowman. SARAH REES JONES is Professor Emeritus of Medieval History at the University of York, UK.