A former soldier and surgeon of the régiment de Flandre who had settled in the Bas-Poitou as an estate steward and had been suspended from local office for hiding a refractory priest, Joly raised the coastal country round La Mothe-Achard in March 1793 and twice attacked Les Sables-d’Olonne without success. He styled himself a royalist democrat and signed as commanding general, and was forced under Charette’s authority only in September. He detested the nobility, quarrelled with Charette repeatedly and would not acknowledge himself his subordinate; three of his sons were killed in a single action at Legé in February 1794. A sentence of death against him was posted at Charette’s headquarters that June, and he was killed by royalists near Saint-Laurent-sur-Sèvre at the end of the month.