Celestine II
Pope Celestine II (Latin: Caelestinus II; died 8 March 1144), born Guido di Castello, was head of the Catholic Church and ruler of the Papal States from 26 September 1143 to his death on 8 March 1144.
Also recorded as Guido De Castello · Guido Del Castello · Guido di Città di Castello · Guido da Città del Castello
Celestine II

Unidentified painter · Public domain
- Died
- 1144. · Rome.
- Occupation
- catholic priest, writer and catholic theologian.
- Languages
- Latin.
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Documentary summary
Pope Celestine II (Latin: Caelestinus II; died 8 March 1144), born Guido di Castello, was head of the Catholic Church and ruler of the Papal States from 26 September 1143 to his death on 8 March 1144.
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wikipedia incomplete · checked 25 September 2026
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Authority files
wikidata · Q171144 · wikipedia · Pope Celestine II
In this article
Early life
Early life
Guido di Castello, possibly the son of a local noble, Niccolo di Castello, was born either in Città di Castello, situated in Paterna Santa Felicità upon the Apennines, or at Macerata in the March of Ancona. Guido had studied under Pierre Abélard, and eventually became a distinguished master in the schools. Eventually Guido began his career in Rome as a subdeacon and a scriptor apostolicus under Pope Callixtus II. He was created Cardinal-Deacon of Santa Maria in Via Lata by Pope Honorius II in 1127; as such, he signed the papal bulls issued between 3 April 1130 and 21 December 1133. In the double papal election of 1130 he joined the obedience of Pope Innocent II. In December 1133 Innocent promoted him to the rank of Cardinal-Priest of San Marco. He signed the papal bulls as S.R.E. indignus sacerdos between 11 January 1134 and 16 May 1143. As the cardinal of San Marco's, he supported Innocent's claims with regard to Monte Cassino, and as a mark of his confidence in him, Innocent made Guido the rector of Benevento. Afterwards, he made him a papal legate to France in 1140. He participated in the papal election of 1143, the first undisturbed papal election that Rome had seen for eighty-two years, and was elected pope two days after the death of Innocent II, on 25 September 1143, taking the name of Celestine.
Papacy
Papacy
Celestine II governed the Catholic Church for only five months and thirteen days from his election until his death on 8 March 1144. Upon his accession he wrote to Peter the Venerable and the monks of Cluny, asking them to pray for him, while he was congratulated by Arnulf of Lisieux. Regardless of the brevity of his reign, he was prepared to chart a very different course from that of his predecessor. He was opposed to Innocent II's concessions to King Roger II of Sicily and refused to ratify the Treaty of Mignano ("a foolish policy, which he survived – just – long enough to regret"). He was in favor of the Plantagenets' claim to the English throne, and was therefore opposed to King Stephen of England. To emphasise this shift, he refused to renew the legatine authority that Innocent II had granted to King Stephen's brother, Henry of Blois. Celestine also favored the Templars, ordering a general collection for them, as well as the Hospitallers, giving them control of the hospital of Saint Mary Teutonicorum in Jerusalem. The principal act of his papacy was the absolution of Louis VII of France. King Louis had refused to accept the nomination of Pierre de la Chatre as the archbishop of Bourges, who went to see Innocent II to have his nomination confirmed. When Pierre returned to France in 1142, Louis refused him permission to enter his episcopal city, causing Pierre to flee to the court of Count Theobald II of Champagne. Innocent responded by placing France under an interdict. For two years, the various parties remained at loggerheads while Bernard of Clairvaux attempted to mediate the dispute. With the election of Celestine, both Bernard and Theobald appealed to the pope, while Louis sent ambassadors to have the interdict lifted. Louis agreed to accept Pierre as the legitimate archbishop of Bourges, and in return, Celestine removed the sentence of interdict. Celestine died on 8 March 1144 in the monastery of Saint Sebastian on the Palatine hill and was buried in the south transept of the Lateran. Celestine's heraldic badge was a lozengy shield of argent and gules. Celestine II is the first pope listed in the Prophecies of St Malachy.

Calcografia in Giovanni Battista Cavalieri, Pontificum Romanorum effigies, Roma, Basa Domenico\Zanetti Francesco, 1580.
Giovanni Battista de'Cavalieri · This file was uploaded by Biblioteca comunale di Trento.

Cromolitografia in L. Tripepi, Ritratti e biografie dei romani pontefici: da S. Pietro a Leone 13, Roma, Vaglimigli Davide, 1879.
Oleografia Panigati e Meneghini Milano · This file was uploaded by Biblioteca comunale di Trento.
Life and career
Dated record
Life and career
The full dated record · 1 entries
1144
Celestine II died at Rome.
Places
Named by the record
Places
Only places the record itself states, plotted where the house gazetteer settles their coordinates. Nothing is inferred from a name or a nationality.
Città di Castello.
Birth place
Rome.
Death place
Primary material
Documents and archives
reference work
- Wikidata, structured authority record Q171144: Celestine II
Reputable secondary · Wikimedia Foundation
- “Pope Celestine II”, English Wikipedia, consulted as further reading
Reputable secondary · Wikipedia
scholarly publication
- Celestine II, Pocket Dictionary of Popes, 2006
Scholarly · Crossref registry · 2006
Notes from the source article
Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.Thomas, pg. 91
- 2.Miranda, Salvador. CASTELLO, Guido di (?-1144). The Cardinals of the Holy Roman Church. Florida International University. 53276621.
- 3.Mann, pg. 105
- 4.According to Mann (pg. 104), there is a local tradition that Celestine II, when he became pope, presented the cathedral in Città di Castello with a sculptured silver altar-front.
- 5.Mann, pg. 106
- 6.J.M.Brixius, Die Mitglieder des Kardinalkollegiums von 1130–1181, Berlin, 1912, p. 35 no. 19
- 7.J.M.Brixius, Die Mitglieder des Kardinalkollegiums von 1130–1181, Berlin, 1912, p. 35 no. 19 and p. 43 no. 23, indicates that Guido del Castello and Guido S.R.E. indignus sacerdos were two different persons; but see L. Spätling, Kardinal Guido und seine Legation in Böhmen-Mähren (1142–1146) in: Mitteilungen des Instituts für österreichische Geschichtsforschung, Wagner'sche Universitäts-buchhandlung, 1958, p. 310
- 8.Mann, pg. 103
- 9.Mann, pg. 102
- 10.Mann, pgs. 106–107
- 11.Mann, pg. 108
- 12.NORWICH, JOHN JU. The Popes: A History. Vintage. 2012. 9780099565871.
- 13.Mann, pg. 111
- 14.Mann, pg. 109
- 15.Mann, pgs. 109–110
- 16.Mann, pgs. 110–111
Bibliography printed in the source article · 2
- Thomas, P. C., A Compact History of the Popes, St Pauls BYB, 2007
- Mann, Horace K., The Lives of the Popes in the Middle Ages, Vol 9 (1925)
References
Citations
References
Each reference names the institution holding it, so a reader may go to the document itself.
scholarly publication
Celestine II, Pocket Dictionary of Popes, 2006Crossref registry
Verifiedreference work
Wikidata, structured authority record Q171144: Celestine IIWikimedia Foundation
Partially resolvedreference work
Partially resolved
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 14 August 2026.
Elsewhere in Books
38,377 published records in this field, each with its sources named.
- Celâlzâde Mustafa ÇelebiAuthor
- Céledabhaill mac ScandailAuthor
- Celeste M. A. WinslowAuthor
- Celestine IAuthor
- Celia Correas de ZapataAuthor
- Celia de FréineAuthor
- Celia FiennesAuthor
- Celia ImrieAuthor
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