Under the patronage of William IV, Duke of Aquitaine, the assembly of clergy founded the Pax Dei, or Peace of God.

This agreement granted immunity from violence to noncombatants who could not defend themselves, beginning with the peasants and the clergy.

[1] The abbey was said to have possessed the Holy Prepuce, the foreskin of Jesus, which was allegedly given to the monks by Charlemagne, King of the Franks from 768 to 814.

Charles de Cherge and Prosper Mérimée intervened to save the remains of the monument, and the sculptures on the gate were purchased by the French state.

[4] Today, the remains are in the care of the Centre des monuments nationaux, and are open to the public.

In the 15th century by the abbot Jean Chaperon, including a flamboyant Gothic doorway which connected with the church.