Death certificate:

Jean Boucquillon died on March 6 1652 after receiving the sacraments
 
Note from Xavier: “Based on this we cannot be absolutely sure that he is the right one. There is no other record of a death of a Jean Bouquillon in the record between 1629 and 1670. That’s all I can say.
I have not found any death record for Françoise Huon, his wife, during the same period.”