In 1430, a wealthy merchant named Regnault de Wandonne bought the estate and had a sumptuous residence built there. What nickname did the land keep from him?
The answer
The estate took the name Folie Regnault, a 'folie' at the time meaning a luxurious pleasure residence. This name survives to this day in that of a street in the 20th arrondissement.
This question belongs to the “Before the Cemetery” series of the Père-Lachaise quiz: ten questions, a story behind every right answer.