The elder François Pellerin's parents are problematic, and what is there might be the result of a bad merge some time ago. The father is said to be from Rennes, Oise, Normandy (!), so already there are problems with his birth location field. The mother is said to be from Chalons en Champagne, Saint Germain, which I assume corresponds to modern-day Châlons-en-Champagne, Marne. Rennes and Châlons-en-Champagne are far away from each other, causing further suspicion. Fichier Origine is usually reliable, so I would say it is far more likely that it is the younger François Pellerin whose mother was a (Le) Charpentier.