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Pope Innocent IV

Head of the Catholic Church from 1243 to 1254

  • 15 min read
  • 13 chapters

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Fieschi was born in Genoa and studied at the universities of Parma and Bologna. He was considered in his own day and by posterity as a fine canonist. On the strength of this reputation, he was called to the Roman Curia by Pope Honorius III. Pope Gregory IX made him a cardinal and appointed him governor of the Ancona in 1235. Fieschi was elected pope in 1243 and took the name Innocent IV. He inherited an ongoing dispute over lands seized by the Holy Roman Emperor, and the following year he traveled to France to escape imperial plots against him in Rome. He returned to Rome in 1250 after the death of the Emperor Frederick II.

On 15 May 1252 he promulgated the bull Ad extirpanda authorizing torture against heretics, equated with ordinary criminals.

Early life

Born in Genoa (although some sources say Manarola) in an unknown year, Sinibaldo was the son of Beatrice Grillo and Ugo Fieschi, Count of Lavagna. The Fieschi were a noble merchant family of Liguria. Sinibaldo received his education at the universities of Parma and Bologna and may have taught canon law, for a time, at Bologna. The fact is disputed, though, as others pointed out, there is no documentary evidence of his teaching position. From 1216 to 1227 he was a canon of the Cathedral of Parma. He was considered one of the best canonists of his time, He wrote the Apparatus in quinque libros decretalium, a commentary on papal decrees. He was called to serve Pope Honorius III in the Roman Curia where he rapidly rose through the hierarchy. He was Auditor causarum, from 11 November 1226 to 30 May 1227. He was then quickly promoted to the office of Vice-Chancellor of the Holy Roman Church (from 31 May to 23 September 1227), though he retained the office and the title for a time after he was named Cardinal.

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