Strictly speaking, the original, “terrorists” for whose “terrorism” in instituting “the Terror” those terms were all coined as specific terms and later genericized were Robespierre and certain other top leaders of the regime established by the Revolution; that groups overlaps with, but is not coextensive with, leaders of the Revolution; the aristocracy already had their legal power stripped before the whole head chopping thing (which was very much not limited to the aristocracy, the vast majority of the ~15k formal executions and the ~10k who died in custody without trial were commoners, and the ratio is even higher for the ~300k killed outside of judicial process during the Terror.)
Strictly speaking, the original, “terrorists” for whose “terrorism” in instituting “the Terror” those terms were all coined as specific terms and later genericized were Robespierre and certain other top leaders of the regime established by the Revolution; that groups overlaps with, but is not coextensive with, leaders of the Revolution; the aristocracy already had their legal power stripped before the whole head chopping thing (which was very much not limited to the aristocracy, the vast majority of the ~15k formal executions and the ~10k who died in custody without trial were commoners, and the ratio is even higher for the ~300k killed outside of judicial process during the Terror.)