Pompeo De' Monti dei baroni di Corigliano bruciato nel 1566 fu veramente eretico?

The town of Nardò rebelled against its feudal lord in 1552 because of his vexatious government and, after joining the anti-Spanish revolt of the prince of Salerno Ferrante Sanseverino, it raised the French flags. An agent of the Viceroy Toledo who was in Venice, Pompeo de Monti of the barons of Corigliano d'Otranto, suspected about the plot and he informed the Dean Ferrante Loffredo who rushed to Nardò, captured some conspirators, and hanged 11, restoring the ordinary life. This crime intersected with an attempt to poison the Pope Pius IV, planned by the Archbishop of Naples and other prelates including the Cardinal of Santaseverina, announced to the Pope by the physician Ortensio Abaticchio of Cutrofiano who was said to be about to receive the task of poisoning. Abaticchio was tried and convicted for slander, and burned for heresy in 1566. After about 20 days Pompeus de Monti, of whom Abaticchio was a servant, suffered the same fate, because the prelates rightly suspected that even De Monti knew and could have revealed everything. So even De Monti, a simple agent in the service of the Spanish government, undercover in Venice among the spies, was accused in the Holy Office as a Valdesian heretic, tried and sentenced to the stake for slander, and he was burned innocent in Rom.