The First Mass Murderer

I have mentioned the 12th century heresy called Catharism. The attempts to stamp it out are called the Albigensian Crusade (and sometimes the Cathar Crusade). One prominent Crusader was Arnaud Amalric.

Arnaud was a Cistercian (a branch of Benedictines), who became abbot of Cîteaux from 1202 to 1212. In 1204 he was sent by Pope Innocent III to attempt the conversion of the Albigensians who followed Catharism. His attempts to convert them to mainstream Catholicism did not work, and so his preaching turned to speaking out against them to those who would listen. This was followed by leading a Crusade against Catharism, the first major military operation of which was a 22 July 1209 attack on the town of Béziers in southern France.

In a letter to Innocent in August 1209, he describes the attack:

...while discussions were still going on with the barons about the release of those in the city who were deemed to be Catholics, the servants and other persons of low rank and unarmed attacked the city without waiting for orders from their leaders. To our amazement, crying "to arms, to arms!", within the space of two or three hours they crossed the ditches and the walls and Béziers was taken. Our men spared no one, irrespective of rank, sex or age, and put to the sword almost 20,000 people. After this great slaughter the whole city was despoiled and burnt...

The number 20,000 is clearly an exaggeration, but his description of the wholesale slaughter "irrespective of rank, sex or age" is likely to be more or less accurate. Because the sack of Bèziers apparently did not distinguish between Cathars and Catholics, Arnaud is reported to have said at the time "Kill them. For the Lord knows who are His."

This is considered the origin of an oft-repeated line: "Kill them all and let God sort them out." Arnaud's line was recorded 13 years later by Caesarius of Heisterbach, prior of a Cistercian abbey. Caesarius was not an eyewitness, never met Arnaud, and we have no proof that Arnaud actually said this, but some use the incident to refer to Arnaud Amalric as the first proponent of mass murder.

Arnaud was named archbishop of Narbonne in 1212, after which we hear little about him. He died on 29 September 1225.

As for his imaginative chronicler, Caesarius of Heisterbach, I'll tell you a little more tomorrow, as well as his identification of a particularly unhelpful demon.