| James-Alexandre de Pourtalès - Count, sponsor | The hotel was built in 1838-1839. |
| Félix Duban - Architect | Designs the hotel and its interior decor. |
| Edmond de Pourtalès-Gorgier - Count, heir | Modified the hotel between 1865 and 1870. |
| Hippolyte Destailleur - Architect | Transforms the hotel in 1865-1870. |
| Anthony Béchu - Architect | Directs the restoration (2006-2008). |
| Comtesse de Pourtalès (née Bussière) - Mondaine, lounger | Figure of Second Empire and Third Republic. |