Around 1550, thanks to a happy combination of circumstances, P. Assézat found himself in the possession of a great fortune and his social situation became enviable. Nevertheless, his conversion to Calvinism and his active participation to the uprising of the Huguenots in 1562 forced him to exile and exposed him to reprisals (jail). However, it did not prevent him from keeping on supporting the Reformed cause thanks to the international network that his mercantile activity abled him to constitute, notably in the Netherlands. Even after his religious change of position in 1572, he kept on being in close faith to the king of Navarre. And during all this time, he did not neglect his businesses, such as the sale of woad that he delt indifferently with Protestants or Catholics, and thus conforming himself to the common practice of the other great international merchants.