In this role, which he maintained until his death, he implemented in his mountain diocese principles of the Gregorian reform, both in regard to the discipline of clergy as religious and moral life of the laity.

[2] During his long episcopate, almost half a century,[3] the city of Lugdunum Convenarum - which would later take his name, Saint-Bertrand-de-Comminges - was revived.

It is listed as a UNESCO World Heritage Sites of the Routes of Santiago de Compostela in France.

[2] Around 1167, the Archbishop of Auch commissioned a cleric named Vital to write his life and sent to the Curia for his canonization.

A magnificent tomb was built in their honor by Cardinal Pierre de Foix, who occupied the episcopal seat of Comminges from 1422 to 1442.