The medieval dissenters known as 'Waldenses', named after their first founder, Valdes of Lyons, have long attracted careful scholarly study, especially from specialists writing in Italian, French and German. Waldenses were found across continental Europe, from Aragon to the Baltic and East-Central Europe. They were long-lived, resilient, and diverse. They lived in a special relationship with the prevailing Catholic culture, making use of the Church's services but challenging its claims. Many Waldenses are known mostly, or only, because of the punitive measures taken by inquisitors and the Church hierarchy against them. This volume brings for the first time a wide-ranging, multi-authored interpretation of the medieval Waldenses to an English-language readership, across Europe and over the four centuries until the Reformation. Contributors: Marina Benedetti, Peter Biller, Luciana Borghi Cedrini, Euan Cameron, Jacques Chiffoleau, Albert de Lange, Andrea Giraudo, Franck Mercier, Grado Giovanni Merlo, Georg Modestin, Martine Ostorero, Damian J. Smith, Claire Taylor, and Kathrin Utz Tremp.