Hugo entered the Norbertine novitiate at Pont-à-Mousson, where he pronounced his vows on 28 August 1685, receiving the name in religion of Louis.
Hugo's decision to enter the Norbertine novitiate in Pont-à-Mousson on August 28, 1685, signifies a significant step towards becoming a member of the religious order, where he took his vows and was given the name Louis.