CAROLO, better known under the Latinized form of his name, CAROLUS SIGONIUS, an eminent historian and antiquary, was born at Modena in 1520. He was pupil and successor to Franciscus Portus in the chair of Greek literature at Modena. Having subsequently become widely known by his publications on classical antiquity, he had various invitations to occupy the professor's chair at different university seats. He professed belles lettres at Venice in 1552, from which place he removed to Padua to the chair of eloquence in 1560. Here he met his old literary foe Robertello, who disputed with him on the names of the Romans, till the Senate of Venice had to silence the combatants. From Padua Sigonio removed to Bologna, where he received a handsome income, and where he attracted, by the accuracy and thoroughness of his instructions, many students to that university. Having discovered some fragments of Cicero, he undertook surreptitiously to restore the De Consolatione of that author. So successfully had he imitated the style and mode of thought of the Roman, that the work long passed for genuine, till his pupil, Riccoboni, exposed the trick. Sigonio retired to the neighbourhood of his native town, where he died in 1584. He left behind him a great reputation as an elegant scholar. To him more recent authors have been more indebted than perhaps they would be willing to own. His numerous writings were collected by Argellati, Milan, 6 vols., 1732-1737, to which is prefixed a life of the author by Muratori. A list of his works will be found in the Thesaurus of Graevius and Gronovius, and in the Biographie Universelle, vol. xlii.