First English translation of important contemporary source for the history of the Cathar heresy and the Albigensian crusade. The Historia Albigensis is one of the most important sources for the history of the Cathar heresy and the Albigensian crusade. This new translation makes the work available in English for the first time. The Historiawas written between about 1212 and 1218 by Peter, a young monk at the Cistercian abbey of les Vaux-de-Cernay,...