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Pope Gregory IX

pope of the Catholic Church from 1227 to 1241

14 dated entries naming Pope Gregory IX, drawn from 13 separate years between 1145 CE and 1240 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.

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12th century

  • 1145Gregory IX, pope of the Catholic Church (died 1241)source

13th century

  • 1227March 18 – Pope Honorius III dies at Rome after a pontificate of nearly 11 years. He is succeeded by Gregory IX as the 178th pope of the Catholic Church.source
  • 1227October 10 – Frederick II recovering at Pozzuoli, receives a letter from Pope Gregory IX, announcing his ex-communication. Frederick is branded a wanton violator of his sacred oath taken many times, at Aachen, Ferentino, Veroli and San Germano. Meanwhile, the Crusader army fortifies Sidon Sea Castle and rebuilds Montfort Castle, northeast of Acre, as a new headquarter castle for the Teutonic Knights, who called it Starkenburg.source
  • 1228Summer – Emperor Frederick II sails from Brindisi with an expeditionary force and arrives in Acre in the Middle East on September 7. He disembarks a well-trained and equipped Crusader army (some 10,000 men and 2,000 knights). After his arrival in Palestine, Frederick is again excommunicated by Pope Gregory IX, for setting out for the Crusade before he has obtained absolution from his previous ex-communication (see 1227). Many of the local nobility, the Knights Templar and Knights Hospitaller deny him their support for the Crusade. Frederick can only rely on his own army and the Teutonic Knights, whose Grand Master, Hermann von Salza, is his friend.source
  • 1229January 23 – The episcopal seat is moved from Nousiainen to Koroinen (located near the current centre of Turku) by the permission of Pope Gregory IX. The date is starting to be considered as the founding of Turku.source
  • 1230August – Treaty of Ceprano: Emperor Frederick II returns from the Sixth Crusade and signs a peace agreement with Pope Gregory IX at Ceprano. He agrees not to violate any territories held by the Papal States in return for Frederick's concessions in Sicily.source
  • 1231April 13 – Pope Gregory IX issues Parens scientiarum. The bull assures the independence and self-governance of the University of Paris.source
  • 1232May 30 – Anthony of Padua is canonized by Pope Gregory IX at Spoleto, less than a year after his death. He becomes the patron saint of lost items.source
  • 1233Pope Gregory IX establishes the Papal Inquisition, to regularize the persecution of heresy.source
  • 1234July 3 – Saint Dominic is canonized by Pope Gregory IX.source
  • 1235Elizabeth of Hungary (died 1231) is canonized by Pope Gregory IX.source
  • 1236Pope Gregory IX condemns the links that both the Knights Templer and Knights Hospitaller have with the Assassin fighters in the Middle East. He issues a bull (a formal papal proclamation) preventing further contact with the Assassins.source
  • 1239November – Pope Gregory IX grants the status of Crusade to King Ferdinand III of Castile ("the Saint"), who leads a successful campaign against the Almohads in Murcia.source
  • 1240Pope Gregory IX authorizes a Crusade against Novgorod, hoping that the Kievan Rus' will be too preoccupied dealing with the raiding Mongols to the east to defend.source

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