Simon de Montford once owned this estate, and the next lord of Dunstanborough was a son of Henry III., to whom Earl Simon's forfeited estate was given.

'Folquet,' Bishop of Toulouse, who had been in early life a Troubadour, distinguished himself by his ferocity and perfidy in the crusade against the Albigenses and Troubadours, especially at the surrender of Toulouse, in company with his chief abettor, the infamous Simon de Montford.