Career
During the French Revolution he served as a deputy to the National Convention and held membership in the Committee of Public Safety. Born in Sommesous (Marne), Prieur practised as a lawyer at Châlons-sur-Marne until 1789, when he was elected to the States-General. In 1791, he became vice-president of the criminal tribunal of Paris.
Re-elected to the Convention, he was sent to Normandy, where he directed bitter reprisals against the supporters of Federalism. In May 1794 he became president of the Convention. The Thermidorian Reaction drove him into hiding from May 1795 until the amnesty proclaimed in the autumn of that year.
He took no part in public affairs under the Directory, the Consulate or the Empire, and in 1816, after the Bourbon Restoration, he was banished as a regicide. Prieur died in Brussels in 1827.