Simplify the following text for a Grade 11 native English-speaking person.
Original: Viollet-le-Duc left copious notes and drawings at his death in 1879 , when his pupil Paul Boeswillwald , and later the architect Nodet continued the rehabilitation of Carcassonne .
Simplified: At his death in 1879 his pupil Paul Boeswillwald , and later the architect Nodet continued the rehabilitation of Carcassonne .