Antoine de l'Age, (or Laage), duc de Puylaurens (1602-1635) was a French courtier.
Attached to the household of Gaston, Duke of Orleans, brother of Louis XIII, he gained a complete ascendancy over the weak prince by pandering to his pleasures, and became his adviser in the intrigues against Cardinal Richelieu.
It was Puylaurens who arranged the escape of Gaston to Brussels in 1632 after the capture of Henri, duc de Montmorency, and then negotiated his return with Richelieu, on condition that he should be reconciled to the king.
Dossat, however, felt that the William of the Inquisition and the chronicle was too anti-crusade to be a credible chaplain for the son of the count of Toulouse, and argued instead that the chaplain was someone else with the same name.
In 1273, a master William of Puylaurens reappears as a witness for an Aimery de Rouaix in a case against royal authorities.
It seems just as reasonable to argue that master William, rector of Puylaurens, died in the mid- to late 1250s, and that the author of the chronicle was the William of Puylaurens who appears active at Toulouse in the 1270s.