Others, such as Chabaneau, assign him to a prominent family from Toulouse named "Catalan".
If the latter is correct he is probably the same as the Dominican Inquisitor who persecuted Cathars with such force that he was almost killed by a mob in Albi in 1234.
[1] Four of Arnaut's cansos are dedicated to Beatrice of Savoy,[2] wife of Raymond Berengar IV of Provence, and one of his tensos was composed with Raymond.
[3] An Arnaldus Catalanus, probably Arnaut, confirmed a donation of Raymond's at Aix-en-Provence on 29 August 1241.
Arnaut composed one other tenso with a poet named Vaquier Teriaz.