Pedro Julião
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Pope John XXI (, , ; – 20 May 1277), born Pedro Julião (), was head of the
Catholic Church The Catholic Church (), also known as the Roman Catholic Church, is the List of Christian denominations by number of members, largest Christian church, with 1.27 to 1.41 billion baptized Catholics Catholic Church by country, worldwid ...
and ruler of the
Papal States The Papal States ( ; ; ), officially the State of the Church, were a conglomeration of territories on the Italian peninsula under the direct sovereign rule of the pope from 756 to 1870. They were among the major states of Italy from the 8th c ...
from 8 September 1276 to his death in May 1277. He is the only ethnically Portuguese pope in history.Richard P. McBrien, ''Lives of the Popes'', (Harper Collins, 1997), 222. He is sometimes identified with the
logic Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the study of deductively valid inferences or logical truths. It examines how conclusions follow from premises based on the structure o ...
ian and herbalist
Peter of Spain __NOTOC__ Peter of Hispania (; Portuguese and ; century) was the author of the ', later known as the ', an important medieval university textbook on Aristotelian logic. As the Latin ''Hispania'' was considered to include the entire Iberian Peni ...
(; ), which would make him the only pope to have been a physician.


Early life

Pedro Julião was born in
Lisbon Lisbon ( ; ) is the capital and largest city of Portugal, with an estimated population of 567,131, as of 2023, within its administrative limits and 3,028,000 within the Lisbon Metropolitan Area, metropolis, as of 2025. Lisbon is mainlan ...
between 1210 and 1220 to Julião Pais, chancellor of
Afonso Henriques Dom Afonso IOr also ''Affonso'' (Archaic Portuguese-Galician) or ''Alphonso'' ( Portuguese-Galician) or ''Alphonsus'' (Latin version), sometimes rendered in English as ''Alphonzo'' or ''Alphonse'', depending on the Spanish or French influence ...
and Sancho I, and his wife Mor Mendes. He started his studies at the episcopal school of
Lisbon Cathedral The Cathedral of Saint Mary Major ( or ''Sé-Catedral Metropolitana Patriarcal de Santa Maria Maior de Lisboa''), often called Lisbon Cathedral or simply the Sé ('), is a Roman Catholic cathedral located in Lisbon, Portugal. It is the oldest ch ...
and later joined the
University of Paris The University of Paris (), known Metonymy, metonymically as the Sorbonne (), was the leading university in Paris, France, from 1150 to 1970, except for 1793–1806 during the French Revolution. Emerging around 1150 as a corporation associated wit ...
, although some historians claim that he was educated at
Montpellier Montpellier (; ) is a city in southern France near the Mediterranean Sea. One of the largest urban centres in the region of Occitania (administrative region), Occitania, Montpellier is the prefecture of the Departments of France, department of ...
. Wherever he studied, he concentrated on
medicine Medicine is the science and Praxis (process), practice of caring for patients, managing the Medical diagnosis, diagnosis, prognosis, Preventive medicine, prevention, therapy, treatment, Palliative care, palliation of their injury or disease, ...
,
theology Theology is the study of religious belief from a Religion, religious perspective, with a focus on the nature of divinity. It is taught as an Discipline (academia), academic discipline, typically in universities and seminaries. It occupies itse ...
,
logic Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the study of deductively valid inferences or logical truths. It examines how conclusions follow from premises based on the structure o ...
,
physics Physics is the scientific study of matter, its Elementary particle, fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge whi ...
,
metaphysics Metaphysics is the branch of philosophy that examines the basic structure of reality. It is traditionally seen as the study of mind-independent features of the world, but some theorists view it as an inquiry into the conceptual framework of ...
, and
Aristotle Aristotle (; 384–322 BC) was an Ancient Greek philosophy, Ancient Greek philosopher and polymath. His writings cover a broad range of subjects spanning the natural sciences, philosophy, linguistics, economics, politics, psychology, a ...
's
dialectic Dialectic (; ), also known as the dialectical method, refers originally to dialogue between people holding different points of view about a subject but wishing to arrive at the truth through reasoned argument. Dialectic resembles debate, but the ...
. He is traditionally and usually identified with the medical author
Peter of Spain __NOTOC__ Peter of Hispania (; Portuguese and ; century) was the author of the ', later known as the ', an important medieval university textbook on Aristotelian logic. As the Latin ''Hispania'' was considered to include the entire Iberian Peni ...
, an important figure in the development of logic and
pharmacology Pharmacology is the science of drugs and medications, including a substance's origin, composition, pharmacokinetics, pharmacodynamics, therapeutic use, and toxicology. More specifically, it is the study of the interactions that occur betwee ...
. Peter of Spain taught at the
University of Siena The University of Siena (, abbreviation: UNISI), located in Siena, Tuscany, holds the distinction of being Italy's first publicly funded university as well as one of the oldest, originally established as ''Studium Senese'' in 1240. As of 2022, it ...
in the 1240s and his ' was used as a university textbook on
Aristotelian logic In logic and formal semantics, term logic, also known as traditional logic, syllogistic logic or Aristotelian logic, is a loose name for an approach to formal logic that began with Aristotle and was developed further in ancient history mostly b ...
for the next three centuries. At the court in Lisbon, he was the councilor and spokesman for King Afonso III in church matters. Later, he became
prior The term prior may refer to: * Prior (ecclesiastical), the head of a priory (monastery) * Prior convictions, the life history and previous convictions of a suspect or defendant in a criminal case * Prior probability, in Bayesian statistics * Prio ...
of Guimarães. He was Archdeacon of Vermoim (Vermuy) in the Archdiocese of Braga. He tried to become
bishop of Lisbon The Metropolitan Patriarchate of Lisbon () is a Latin Church ecclesiastical territory or patriarchal archdiocese of the Catholic Church in Lisbon, the capital of Portugal. Its archiepiscopal see is the Patriarchal Cathedral of St. Mary Major, i ...
but was defeated. Instead, he became the Master of the school of Lisbon. Peter became the physician of
Pope Gregory X Pope Gregory X (;  – 10 January 1276), born Teobaldo Visconti, was head of the Catholic Church and ruler of the Papal States from 1 September 1271 to his death and was a member of the Third Order of St. Francis. He was elected at the ...
(1271–1276) early in his reign. In March 1273, he was elected Archbishop of
Braga Braga (; ) is a cities of Portugal, city and a Municipalities of Portugal, municipality, capital of the northwestern Portugal, Portuguese Braga (district), district of Braga and of the historical and cultural Minho Province. Braga Municipality ...
, but did not assume that post; instead, on 3 June 1273,
Pope Gregory X Pope Gregory X (;  – 10 January 1276), born Teobaldo Visconti, was head of the Catholic Church and ruler of the Papal States from 1 September 1271 to his death and was a member of the Third Order of St. Francis. He was elected at the ...
created him Cardinal Bishop of Tusculum (Frascati).


Papacy

After the death of
Pope Adrian V Pope Adrian V (; – 18 August 1276), born Ottobuono de' Fieschi, was the head of the Catholic Church and ruler of the Papal States from 11 July 1276 to his death on 18 August 1276. He was an envoy of Pope Clement IV sent to England in May 1 ...
on 18 August 1276, Peter was elected pope on 8 September. He was crowned a week later on 20 September. One of John XXI's few acts during his brief reign was the reversal of a decree recently passed at the
Second Council of Lyon The Second Council of Lyon was the fourteenth ecumenical council of the Roman Catholic Church, convoked on 31 March 1272 and convened in Lyon, Kingdom of Arles (in modern France), in 1274. Pope Gregory X presided over the council, called to ...
(1274); the decree had not only confined cardinals in solitude until they elected a successor pope, but also progressively restricted their supplies of food and wine if their deliberations took too long. Though much of John XXI's brief papacy was dominated by the powerful Cardinal Giovanni Gaetano Orsini, who succeeded him as
Pope Nicholas III Pope Nicholas III (; Wiktionary:circa, c. 1225 – 22 August 1280), born Giovanni Gaetano Orsini, was head of the Catholic Church and ruler of the Papal States from 25 November 1277 to his death on 22 August 1280. He was a Roman nobleman who h ...
, John attempted to launch a
crusade The Crusades were a series of religious wars initiated, supported, and at times directed by the Papacy during the Middle Ages. The most prominent of these were the campaigns to the Holy Land aimed at reclaiming Jerusalem and its surrounding t ...
for the
Holy Land The term "Holy Land" is used to collectively denote areas of the Southern Levant that hold great significance in the Abrahamic religions, primarily because of their association with people and events featured in the Bible. It is traditionall ...
, pushed for a union with the Eastern church, and did what he could to maintain peace between the Christian nations. Among his other acts, he excommunicated
Afonso III of Portugal Afonso IIIrare English alternatives: ''Alphonzo'' or ''Alphonse'', or ''Affonso'' (Archaic Portuguese), ''Alfonso'' or ''Alphonso'' (Portuguese-Galician languages, Portuguese-Galician) or ''Alphonsus'' (Latin). (; 5 May 121016 February 1279), ca ...
for interfering with episcopal elections and sent legates to
Kublai Khan Kublai Khan (23 September 1215 – 18 February 1294), also known by his temple name as the Emperor Shizu of Yuan and his regnal name Setsen Khan, was the founder and first emperor of the Mongol-led Yuan dynasty of China. He proclaimed the ...
. He also launched a
mission Mission (from Latin 'the act of sending out'), Missions or The Mission may refer to: Geography Australia *Mission River (Queensland) Canada *Mission, British Columbia, a district municipality * Mission, Calgary, Alberta, a neighbourhood * ...
to convert the
Tatars Tatars ( )Tatar
in the Collins English Dictionary
are a group of Turkic peoples across Eas ...
, but he died before it could start. To secure the necessary quiet for his medical studies, he had an apartment added to the papal palace at
Viterbo Viterbo (; Central Italian, Viterbese: ; ) is a city and ''comune'' (municipality) in the Lazio region of Italy, the Capital city, capital of the province of Viterbo. It conquered and absorbed the neighboring town of Ferento (see Ferentium) in ...
, to which he could retire when he wished to work undisturbed. On 14 May 1277, while the pope was alone in this apartment, the ceiling collapsed; John was rescued alive from beneath the rubble; however, he died of his serious injuries on 20 May, possibly an early recorded case of
crush syndrome Crush syndrome (also traumatic rhabdomyolysis or Bywaters' syndrome) is a medical condition characterized by major shock and kidney failure after a crushing injury to skeletal muscle. It should not be confused with crush injury, which is the c ...
. He was buried in the Duomo di Viterbo, where his tomb can still be seen. The original
porphyry Porphyry (; , ''Porphyrios'' "purple-clad") may refer to: Geology * Porphyry (geology), an igneous rock with large crystals in a fine-grained matrix, often purple, and prestigious Roman sculpture material * Shoksha porphyry, quartzite of purple c ...
sarcophagus was destroyed during the cathedral's 16th-century refurbishment, and was replaced with a more modest one in stone with the pope's effigy. In the 19th century, the
Duke of Saldanha Duke of Saldanha (in Portuguese ''Duque de Saldanha'') is a Portuguese title granted by royal decree of Queen Maria II of Portugal, dated November 4, 1846, to João Carlos Saldanha de Oliveira Daun, 1st Duke of Saldanha, João Carlos Saldanha de ...
, as Portuguese Ambassador to the Holy See, had the pope's remains transferred to a new sarcophagus sculpted by Filippo Gnaccarini. In 2000, the
Lisbon Lisbon ( ; ) is the capital and largest city of Portugal, with an estimated population of 567,131, as of 2023, within its administrative limits and 3,028,000 within the Lisbon Metropolitan Area, metropolis, as of 2025. Lisbon is mainlan ...
City Council, led by Mayor João Soares, successfully had a new funeral monument built in
lioz Lioz (), also known as Royal Stone (''pedra real''), is a type of limestone, originating in Portugal, from the Lisbon region. It is famed for its use as an Dimension stone, ornamental stone, resulting in its proliferation in palaces, cathedra ...
stone, topped by the original stone effigy of the pope, placed in a more condign location in the
transept A transept (with two semitransepts) is a transverse part of any building, which lies across the main body of the building. In cruciform ("cross-shaped") cruciform plan, churches, in particular within the Romanesque architecture, Romanesque a ...
.


Legacy

After his death, it was rumored that John XXI had actually been a
necromancer Necromancy () is the practice of magic involving communication with the dead by summoning their spirits as apparitions or visions for the purpose of divination; imparting the means to foretell future events and discover hidden knowledge. ...
, a suspicion frequently directed towards the few scholars among medieval popes (see, e.g.,
Sylvester II Pope Sylvester II (; – 12 May 1003), originally known as Gerbert of Aurillac, was a scholar and teacher who served as the bishop of Rome and ruled the Papal States from 999 to his death. He endorsed and promoted study of Science in the medieva ...
). It was also said that his death had been an
act of God In legal usage in the English-speaking world, an act of God, act of nature, or damnum fatale ("loss arising from inevitable accident") is an event caused by no direct human action (e.g. Severe weather, severe or extreme weather and other natur ...
, stopping him from completing a heretical treatise. Odorico Raynaldi, ''sub anno'' 1227, no. 19. Since the works of "Peter of Spain" continued to be studied and appreciated, however,
Dante Alighieri Dante Alighieri (; most likely baptized Durante di Alighiero degli Alighieri; – September 14, 1321), widely known mononymously as Dante, was an Italian Italian poetry, poet, writer, and philosopher. His ''Divine Comedy'', originally called ...
placed "Pietro Spano" in his '' Paradiso's'' Sphere of the Sun with the spirits of other great religious scholars.


See also

*
List of popes This chronological list of the popes of the Catholic Church corresponds to that given in the under the heading "" (The Roman Supreme Pontiffs), excluding those that are explicitly indicated as antipopes. Published every year by the Roman Curia ...


Notes


References


Bibliography

* * Guiraud, J. and L. Cadier (editors), ''Les registres de Grégoire X et de Jean XXI (1271–1277)'' (Paris, 1892–1898) ibliothèque de l'Ecole française à Rome, série 2, 12(in Latin) * Walter, Fritz, ''Die Politik der Kurie unter Gregor X'' (Berlin, 1894) (in German) * Stapper, Richard, ''Papst Johannes XXI. Eine Monographie'' (Münster 1898) irchengeschichtliche Studien, volume 4, no. 4(in German) * Gregorovius, Ferdinand, ''History of Rome in the Middle Ages'', volume V, part 2, second edition, revised (London: George Bell, 1906) * H. D. Sedgwick, ''Italy in the Thirteenth Century'' Volume II (Boston-New York, 1912) * Mazzi-Belli, V., "Pietro Hispano papa Giovanni XXI," ''Rivista di storia della medicina'' 15 (1971), 39–87 (in Italian) * Morceau, Joseph, "Un pape portugais : Jean XXI, dénommé Pierre d'Espagne", ''Teoresi'' 24 (1979), 391–407 (in French) * Maxwell-Stuart, P. G. ''Chronicle of the Popes: The Reign-by-Reign Record of the Papacy from St. Peter to the Present'', Thames & Hudson, 2002, p. 119. . * * * Jean Claude Bologne: ''La Naissance Interdite; stérilité, avortement, contraception au Moyen-Age''. Orban, Paris, 1988 . * * Joachim Telle: ''Petrus Hispanus in der altdeutschen Medizinliteratur und Texte unter besonderer Berücksichtigung des Thesaurus pauperum‘.'' 2 vol., Heidelberg, 1972.


External links

* * * J. P. Kirsch
Art. ''Pope John XXI (XX)''
in: The Catholic Encyclopedia, Vol. VIII (1910) * Salvino Leone: * Joke Spruyt
''Peter of Spain''
(2001), in: Stanford Encyclopedia of Philosophy {{DEFAULTSORT:John 21 Popes Portuguese cardinals John XXI Bishops of Braga Cardinal-bishops of Frascati 13th-century Roman Catholic bishops in Portugal Roman Catholic archbishops of Braga 13th-century writers in Latin John XXI John XXI John XXI John XXI Academic staff of the University of Siena Viterbo Papacy 13th-century popes Characters in the Divine Comedy