A Nantes magistrate’s son who had served as an officer and was the first mayor of Saint-Sébastien-sur-Loire, Lyrot took command in April 1793 of the division of the Loroux, the vineyard country south-east of Nantes, operating as an independent chief in alliance with Charette and the Anjou army. He defeated Beysser in June and attacked the Porte de Rennes in the failed assault on Nantes at the end of that month, unable to join Charette because the Sèvre lay between them. He covered the retreat after Cholet and recovered the wounded d’Elbée and Bonchamps. He crossed the Loire at Oudon to secure the bridgehead by which the beaten army passed, and followed it into Normandy. He was killed at Savenay on 23 December 1793, aged sixty-one.