Clement IV is said to have disapproved of the cruelties committed by his protégé, but the statement by Gregorovius that Clement IV became an accomplice by refusing to intercede for the unfortunate Conradin whom Charles had beheaded in the marketplace of Naples seems contentious.
Se spune că Clement al IV-lea a dezaprobat cruzimile comise de protectorul său, dar declarația lui Gregorovius prin care Clement al IV-lea a devenit un complice refuzând să intervină pentru nefericitul Conradin pe care Charles la decapitat pe piața din Napoli, pare controversat.