| Date | Person | Description |
|---|---|---|
| 1629 – 1633 | Fournier, Georges | Teacher of mathematics in La Flèche |
| 1640 – 1641 | Fournier, Georges | Teacher of mathematics in Hesdin |
| Fournier, Georges | Occupied himself with hydrography, geography, navigation, trading, naval construction | |
| 1642 | Fournier, Georges | Occupied himself with astronomical observations in Paris |