The architect of XXX was who?
Hôtel de Toulouse
The Hôtel de Toulouse, former Hôtel de La Vrillière, situated 1 rue de La Vrillière, in the 1st arrondissement of Paris, was built between 1635 and 1640 by François Mansart, for Louis Phélypeaux, seigneur de La Vrillière.
François Mansart