| François de Royers de La Valfenière - Architect assigned | Presumed designer of the hotel (died 1667) |
| Louis-François de Royers de La Valfenière - Architect | Son of Francis, associate of the works |
| Jean Rochas - Mason | Signatory of the contract for vestibule/ stairway (1668) |
| Joseph-Philippe de Montaigu - Marquis and owner | Sponsor family member |
| Joseph de Montaigu - Heir | Married in 1768 to Marguerite Gaultier |
| Augustin de Montaigu - Last named heir | Son of Joseph (1769–33) |
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