How does a brother choose his religious name?

Prise d'habit au prieuré de Princeville

A religious name is given to a brother at his clothing (when he receives the habit), half way through the noviciate. The novice himself suggests three names from which the superior choses one. The monastic tradition of changing one’s name expresses the fact that by entering religious life the baptised person embarks on a new path in the footsteps of the Lord.