- Born on February 21, 1741 at château de Brest
- Deceased on April 5, 1817 in Paris, at 10e ancien, at the age of 76 years
Parents
- Pierre Rochon (1684 - 1758), seigneur de Mazeirat, aide-major à Brest
- Marie Josèphe Agnès Michel (1707 - ), dame de Rosonnet
Family
- Married on January 10, 1794 in Brest, with Marie Michelle Thérèse Boudin de Tromelin (1762 - 1841)
Occupations
- inventeur du micromètre prismatique
- astronome de la Marine
- voyageur
- clerc tonsuré