| Mathurin Cherpitel - Architect | Designed the hotel, Gabriel's student. |
| Louis Marie Florent du Châtelet - Duke and sponsor | Initial owner, guillotined in 1793. |
| Diane-Adélaïde de Rochechouart - Duchess of the Châtelet | Wife of the Duke, co-commander. |
| Claude Nicolas Ledoux - Architect | Author of the neoclassical facade. |
| Victor Baltard - Architect | Transforms the hotel for the archdiocese (1849). |
| René Viviani - Prime Minister of Labour | Busy hotel from 1906. |