 On 2 March 1794, the Committee of General Security ordered his arrest.Accused of having poorly defended Mainz during the siege in 1793, and considered an aristocratic ""suspect"", he was jailed in the Carmes prison and sentenced to death during the Reign of Terror.His wife, Josephine, was jailed in the same prison on 21 April 1794, but she was freed after three months, thanks to the trial of Maximilien Robespierre.