| Date | Person | Description |
|---|---|---|
| Fournier, Georges | Occupied himself with hydrography, geography, navigation, trading, naval construction | |
| 1642 | Fournier, Georges | Occupied himself with astronomical observations in Paris |
| Hoste, Paul | Teacher of exact sciences, astronomical observations in Lyon | |
| Hoste, Paul | Occupied himself with navigation | |
| Pézenas, Esprit | Occupied himself with mathematics, astronomy, astronomical observations, cartography, navigation, scientific instruments, logarithms |