Wikipedia
Sanfedismo
Sanfedismo (from Santa Fede, "Holy Faith" in Italian) was a popular anti-Republican movement, organized by Cardinal Fabrizio Ruffo, which mobilized peasants of the Papal States against the Parthenopaean Republic in 1799, its aims culminating in the restoration of the Bourbon Kingdom of Naples under Ferdinand I of the Two Sicilies. Its full name was the Army of Holy Faith in our Lord Jesus Christ (Italian: Armate della Santa Fede), and its members were called Sanfedisti.
The terms "Sanfedismo" and "Sanfedisti" are sometimes used more generally to refer to any religiously motivated, improvised peasant army that sprung up on the Italian peninsula to resist the newly created French client republics.