Italian jurist notable for his organization of the glosses, the medieval comments on Justinian's codification of Roman law, the Corpus Juris Civilis. He was not proficient in the classics, but he was called "the Idol of the Jurisconsults"
Papal decretal that nominally dealt with the pope's power to legitimize illegitimate children, not so that they could enter holy orders (which was established precedent), but so that they could inherit property
In reality Frederick possessed the resources, geographical isolation, and the ambition to fulfill his own interests, and this led to his great conflict with Pope Gregory IX
Frederick: '"the august Frederick II, Emperor of the Romans, King of Jerusalem and of Sicily, is a lover of wisdom with a philosophical and speculative mind"'
Kantorowicz's other book, The Kings Two Bodies, is a complex study of the theory of divine kingship. According to Kantorowicz, Frederick's use of reason as the basis for legislation and justice qualified him as a modem ruler
The Art of Falconry by Emperor Frederick II can be seen as an example of his logic and reasoning within ruling, identifying strategies on how to catch certain birds
Title XXXI of the Constitution of Melfi presents Frederick as an impartial ruler stating, "it is our concern to administer justice among them [the people] with ready zeal for each and all without favouritism"
Gregory IX's charges of blasphemy and heresy received little support from his successor, Innocent IV. In detailing the reasons for Frederick's excommunication in 1245 at the Council of Lyons, Innocent emphasized violations of canon law. The strongest argument that he could find to support a charge of heresy was that Frederick had maintained close relations with Moslems scarcely convincing in light of the correspondence the pope himself had had with the Sultan of Egypt
If we assume that the views of Innocent IV were more theocratic than Innocent II then, given the extreme peril to the Roman Church from the activities of Frederick II in the 1240s, it becomes relatively easy to dismiss all claims of the medieval papacy to universal temporal power as a mere passing aberration induced by a very abnormal political situation
Pope Innocent III believed he had authority that was under God but above man, also claiming to have power not just over the universal church but the whole world
Christmas day 1200, read out a Deliberato that the empire was translated to the west from Constantinople by the papacy and that the emperor was "anointed, crowned and invested with the empire by the pope"