| Nicolas de Condorcet - Philosopher and mathematician | Born in this house in 1743. |
| Claude Nicolas Gaudry - Condorcet's maternal grandfather | Sponsor of the house around 1700. |
| Léon Hennique - Naturalist novelist | Owner around 1880, received Zola. |
| François Blondel - Architect (17th century) | Native of Ribemont, presented at the museum. |
| Robert Badinter - Former Minister of Justice | Inaugurated the museum in 2001. |