Jonas Jacob de Fernex
- Born in 1733 in Geneva
- Deceased on January 20, 1798 in this municipality, at the approximate age of 64 years
Parents
- Isaac de Fernex ( - 1759), commis de la Seigneurie aux Farines
- Marie Arlaud ( - 1765)
Family
- Married on August 4, 1765 in Geneva, with Jeanne Élisabeth des Arts (1741 - 1780), issuing
- Jean Marc (1766 - 1771)
Charlotte (1767 - 1769)- Jean Jacques Elie (c. 1770 - )