On his campaigns in Normandy and Guyenne, and was made lieutenant-general of these two provinces.
In 1272 it was the first of the towns of Guyenne to join the confederation headed by Bordeaux.
The " Truce of God " was established by the clergy (originally in Guyenne in 1031) to take advantage of holy days and festivals for the purpose of restricting the time available for bloodshed.
When the religious wars broke out in France, Montluc, a staunch royalist, held Guyenne for the king.
Habitual privation during one year in every three drove the peasants to revolt: in Boulonnais, the Pyrenees, Vivarais, in Guyenne from 1670 onwards and in Brittany in 1675.