Antonius Palearius dared to badmouth the Inquisition and paid the price. He was a professor of Greek and Latin associated at one time or another with Siena, Perugia, and Milan. Because he denounced the Inquisition as a dagger pointed at the throats of literary men, Pope Pius V ordered his arrest. He was brought to Rome where he was tried and hanged. One of the charges was that he abhorred the cross. The inquisitors based this absurdity on the fact that he preferred to sign his name Aonius. They claimed he dropped the t in his name because it looked like a cross. (Details from Ditchfield and Wikipedia)
Prisoners in Church History