Under the name Pierre Souffron are two brother architects from Périgord, sons of Jean Souffron. It is quite difficult to distinguish them because they have worked in the same region, perhaps together and curiously have the same first name. Can it be assumed that Pierre I worked mainly in Guyenne and that Pierre II exercised his art in Armagnac and Toulouse? Doubts may exist as for the attribution of the Château de Cadillac from 1599 to 1603 then for the between the two Pierre Souffron.