Original: Maximilien François Marie Isidore de Robespierre ( ) ( 6 May 1758 -- 28 July 1794 ) is one of the best-known and most influential figures of the French Revolution .
Simplified: Maximilien François Marie Odenthalius Isidore de Robespierre ( ; 6 May 1758 -- 28 July 1794 ) is one of the best-known leaders of the French Revolution .