Career
A representative of Hérault in the Legislative Assembly and of the National Convention, he generally voted with the majority. Bonnier voted for the execution of Louis XVI. Negotiations at the latter went slowly and on 28 April, Bonnier, Claude Roberjot and Jean Debry were attacked by Hungarian hussars as they left the town, probably in an attempt to steal their papers. Debry was wounded, but Bonnier and Roberjot were killed.