Bertrand de l'Isle was canonised .
Bertrand de l'Isle was became known as Saint - Bertrand in the 13th century and Lugdunum Convenarum became known as Saint - Bertrand - de-Comminges .
Bertrand de l'Isle was canonised and became known as Saint - Bertrand in the 13th century and Lugdunum Convenarum became known as Saint - Bertrand - de-Comminges .