This military venture began after Saint Dominic's failed attempted at converting heretics in the Languedoc region, and it contributed to the start of the Inquisition.
Romano Bonaventura summoned the Council of Bourges to fund this military venture and Peter Vaux de Cernay is the principle primary source for it. Peter II of Aragon fought in this conflict until his death at the Battle of Muret, and it began after the murder of Pierre de Castelnau. Arnaud Amalric, the abbot of Citeaux, was responsible for much of the recruitment for this venture and when asked how to distinguish friends from enemies he reportedly said, "Kill them all, for the Lord knows them that are His." In this conflict, Raymond VI of Toulouse regained much of his territories after the death of Simon de Montford and the failure of Louis VIII's campaigns. This military venture began after Saint Dominic's failed attempted at converting heretics in the Languedoc region, and it contributed to the start of the Inquisition. For 10 points, name this crusade called by Pope Innocent III against Cathars in southern France.
Romano Bonaventura summoned the Council of Bourges to fund this military venture and Peter Vaux de Cernay is the principle primary source for it.
{Albigensian} Crusade [accept {Cathar Crusade} until read]