In 1211, Raymond's excommunication was reiterated by papal legates, while the Council of Montpellier placed an Interdict over the County of Toulouse. More
of his son in his will. In 1211, Raymond entrusted him with the castle of Montferrand to defend against the army of Simon de Montfort who led the Albigensian
Toulousains and by Count Raymond VI of Toulouse he left Toulouse on 2 April 1211, after the crusaders laid siege to Lavaur. Soon afterwards he instructed
their leader, Simon IV de Montfort. In 1211 Simon IV de Montfort conducted his first siege of Toulouse, one that featured no siege engines and is widely