Editing Pope Gregory IX (section)

{{Short description|Head of the Catholic Church from 1227 to 1241}}
{{redirect|Gregory IX|the Catholicos of the Holy See of Cilicia in 1439–1446|Gregory IX of Cilicia}}
{{Infobox Christian leader
 | type              = Pope
 | honorific-prefix  = [[List of popes|Pope]]
 | name              = Gregory IX
 | title             = [[Bishop of Rome]]
 | image             = Gregory IX.jpg
 | caption           = Gregory IX in a manuscript miniature {{circa|1270}}
 | birth_name        = Ugolino di Conti
 | church            = [[Catholic Church]]
 | term_start        = 19 March 1227
 | term_end          = 22 August 1241
 | predecessor       = [[Honorius III]]
 | successor         = [[Celestine IV]]
<!---------- Orders ---------->
 | ordination        = 
 | ordinated_by      = 
 | consecration      = c. 1206
 | consecrated_by    = 
 | cardinal          = December 1198
 | created_cardinal_by = [[Innocent III]]
 | rank              = 
 | previous_post     = {{Indented plainlist|
* [[Sant'Eustachio|Cardinal-Deacon of Sant'Eustachio]] (1198–1206)
* [[Bishop of Ostia|Cardinal-Bishop of Ostia e Velletri]] (1206–1227)
}}
 | birth_date        = 1145
 | birth_place       = [[Anagni]], [[Papal States]]
 | death_date        = 22 August 1241 (aged 95-96)
 | death_place       = [[Rome]], Papal States
 | coat_of_arms      = C_o_a_Innocenzo_III.svg
 | other             = Gregory
}}
{{Ordination
| denomination = Catholic Church
| ordained deacon by = 
| date of diaconal ordination = 
| place of diaconal ordination = 
| ordained priest by = 
| date of priestly ordination = 
| place of priestly ordination = 
| consecrated by = 
| co-consecrators = 
| date of consecration = 
| place of consecration = 
| elevated by = [[Pope Innocent III]]
| date of elevation = December 1198
| bishop 1 = [[Bishop Gregoire]]
| consecration date 1 = 2 April 1206
| bishop 2 = [[Pope Honorius III|Bishop Cencio (Pope Honorius III)]]
| consecration date 2 = 24 July 1216
| bishop 3 = [[Bishop Siegfried Ratisbona]]
| consecration date 3 = ?? ???? 1227
| bishop 4 = [[Mariano Filangeri]]
| consecration date 4 = March 1227
| bishop 5 = [[Silvestre Godinho]]
| consecration date 5 = 4 August 1231
| bishop 6 = [[Baudoin d'Aulne]], [[O. Cist.]]
| consecration date 6 = 1232
| bishop 7 = [[Wilbrand de Kevenburg|Wilbrand de Kevenburg (Käfernburg)]]
| consecration date 7 = 25 November 1235
| bishop 8 = [[Walter Cantilupe]]
| consecration date 8 = 3 May 1237
| bishop 9 = [[Guercio Tebalducci]]
| consecration date 9 = 16 May 1237
| bishop 10 = [[João Rol|João Rol (Raol, Raolis)]]
| consecration date 10 = 21 December 1239
}}

'''Pope Gregory IX''' ({{langx|la|Gregorius IX}}; born '''Ugolino di Conti'''; 1145 – 22 August 1241)<ref name=ott/> was head of the [[Catholic Church]] and the ruler of the [[Papal States]] from 19 March 1227 until his death in 1241. He is known for issuing the ''[[Decretals of Gregory IX|Decretales]]'' and instituting the [[Papal Inquisition]], in response to the failures of the episcopal inquisitions established during the time of [[Pope Lucius III]], by means of the [[papal bull]] ''[[Ad abolendam]]'', issued in 1184.

He worked initially as a [[Cardinal (Catholic Church)|cardinal]], and after becoming the successor of [[Honorius III]], he fully inherited the traditions of [[Pope Gregory VII|Gregory VII]] and of his own cousin [[Innocent III]], and zealously continued their policy of [[papal supremacy]].