Origins & Early Life

Pope Innocent IV (Latin: Innocentius IV; c. 1195 – 7 December 1254), born Sinibaldo Fieschi, was head of the Catholic Church and ruler of the Papal States from 25 June 1243 to his death in 1254. 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.

Pivotal Works & Achievements

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.

Enduring Legacy & Impact

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

Contemporary Figures & Related Historical Timelines

• Marco Polo — Contemporary (Born in 1254) (1254): Venetian merchant and explorer whose writings revealed the wonders of Asia.
• Zhao Mengfu — Contemporary (Born in 1254) (1254): Master calligrapher, painter, and scholar of the Yuan Dynasty.
• Aaron Carter — Shared historical date (12-07 · Born) (1987): American singer and rapper known for teen pop stardom and enduring musical career.
• Abd al-Rahman al-Sufi — Shared historical date (12-07 · Born) (903): Influential Persian astronomer known for expanding Ptolemaic models and stellar catalogs.
• Anthony of Padua — Historical peer (Born in 1195) (1195): Portuguese Catholic saint and Franciscan friar, renowned for his preaching.
• Henry the Lion — Historical peer (Died in 1195) (1195): Powerful Welf prince, Duke of Saxony and Bavaria, whose ambition shaped medieval Germany.
• Drogön Chögyal Phagpa — Historical peer (Born in 1235) (1235): First Imperial Preceptor of the Yuan Dynasty and fifth leader of the Sakya school.
• Ibn al-Farid — Historical peer (Died in 1235) (1235): Master Sufi Poet of the Arab World, celebrated for mystical verse.
• Frederick II, Holy Roman Emperor — Historical peer (Died in 1250) (1250): A powerful Hohenstaufen ruler who claimed the mantle of Roman Emperors.
• Raden Wijaya — Historical peer (Born in 1250) (1250): Founder of the Majapahit Empire, a pivotal 13th-century Javanese monarch.
• 1254 Historical Timeline & Archive — Explore world events and figures from 1254
• December 7 (12-07) On This Day — Historical events and memorials on December 7