De Bengy spent nine years in residence at the Jesuit College of Brugelette, and in 1834 entered the Society of Jesus.
During the Crimean War he served as chaplain to the French soldiery and thereafter until 1870 devoted his life to college work.
At midnight, 3 April, a battalion or National Guards surrounded the school and placed all the Jesuit inmates under arrest as hostages of the Paris Commune.
De Bengy cheered up his companions during the dark days of anticipated death.
On Friday, 26 May, with two Jesuit companions and some forty other victims, he was led to the court of the Cité Vincennes, Rue Haxo, where he was executed.