POPE #187
Pope John XXI
The 187th Pope of the Catholic Church
John XXI
Pope John XXI is remembered as one of the most learned men ever to occupy the Chair of St. Peter.
Before becoming pope, he was celebrated throughout Europe as:
“The fear of the Lord is the beginning of wisdom.”
Explore This Pope
Editorial Reading Note
This page preserves the substance of the CatholicG33k biography supplied for this pope while applying the new Every Pope A-Z URL, official Vatican sequence numbering, the approved Pope template, and consistent source labeling. Ancient and medieval details should continue to be distinguished from later tradition during the scheduled historical batch review.
Quick Facts
Overview
Pope John XXI is remembered as one of the most learned men ever to occupy the Chair of St. Peter.
Before becoming pope, he was celebrated throughout Europe as: a physician, philosopher, theologian, scientist, educator.
He remains: The Only Portuguese Pope in the history of the Catholic Church.
Although his pontificate lasted only about: Eight Months, his commitment to learning and his encouragement of higher education left a lasting impression on the medieval Church.
His sudden and tragic death in an architectural accident ended what many believed would become a highly influential pontificate.
Early Life
John XXI was born around: AD 1215-1220 as: Pedro Julião in: Lisbon in the Kingdom of Portugal.
He studied at some of Europe’s leading centers of learning, especially: The University of Paris, where he excelled in: Theology, Philosophy, Logic, Medicine, Natural Science.
His exceptional intellect earned widespread admiration.
Scholar and Physician
Before entering the highest levels of Church leadership, Pedro became one of Europe’s best-known physicians.
He wrote the influential textbook: Summulae Logicales a work on logic that became one of the standard university texts for centuries.
Although long attributed to him, modern scholarship continues to debate the authorship of some works traditionally ascribed to Pope John XXI. The Summulae Logicales is still commonly associated with him, though questions remain among historians.
He also wrote respected medical works, including: Thesaurus Pauperum (“Treasure of the Poor”), a practical medical handbook widely copied during the Middle Ages.
Service Before the Papacy
Pedro served the Church as: physician, theologian, Archbishop of Braga (according to the traditional account; modern scholarship debates aspects of his early ecclesiastical career), Cardinal-Bishop of Tusculum.
He became a trusted adviser to: Pope Gregory X and participated in implementing the reforms of the: Second Council of Lyon.
Becoming Pope
Following the death of: Pope Adrian V the cardinals elected: Pedro Julião on: September 20, AD 1276 He accepted the name: John XXI Interestingly, there had never actually been a legitimate: Pope John XX.
Because of medieval errors in papal numbering, Pedro chose the title: John XXI, skipping directly over “John XX.” This numbering remains unchanged today.
Support for Universities
John strongly encouraged: universities, theology, philosophy, medicine, scientific learning.
He believed that all genuine truth ultimately comes from God, and therefore reason and faith properly complement one another.
His pontificate reflected the remarkable intellectual flowering of the thirteenth century.
Relations with Scholars
John enjoyed close relationships with many of Europe’s leading scholars.
He supported: Dominican theologians, Franciscan scholars, university professors, medical research.
His encouragement helped preserve the close relationship between Catholic theology and higher education.
Conclave Legislation
John continued reviewing the: Conclave Regulations first established by: Blessed Gregory X and later suspended by: Adrian V.
He intended to introduce carefully considered revisions, but his death prevented major legislative action.
The essential principles of Gregory’s conclave reforms would later be restored and strengthened.
Missionary Work
John encouraged continued missionary efforts among: Muslims, Mongols, Eastern Christians, northern Europe.
He also supported diplomatic relations between Christian kingdoms.
The Fatal Accident
Near the papal palace at: Viterbo, John had a private study or library constructed where he could devote time to reading and writing.
In: May AD 1277 the newly built structure unexpectedly: Collapsed while the pope was inside.
John suffered severe injuries.
After several days, he died on: May 20, AD 1277.
His death remains one of the most unusual in papal history.
Church Reform
John continued supporting: the reforms of the Second Council of Lyon, theological education, episcopal discipline, missionary outreach, sound Church administration.
Historical Context
Political Leaders Rudolf I of Habsburg King of the Romans.
Michael VIII Palaiologos Byzantine Emperor.
Philip III King of France.
Edward I King of England.
The Church
During John’s pontificate: universities continued flourishing, missionary work expanded, conclave legislation remained under review, theological scholarship reached new heights.
Challenges
Brief Pontificate His unexpected death prevented long-term reforms.
Church Administration
John sought to continue Gregory X’s reforms while promoting scholarship.
Papal Governance
He inherited ongoing questions concerning the implementation of conclave legislation.
Major Contributions
- One Hundred Eighty-Fourth Pope of the Catholic Church
- Only Portuguese pope
- Promoted universities and scholarship
- Encouraged philosophy, medicine, and theology
- Continued Church reform
- Supported missionary activity
- Began revising conclave legislation
Interesting Facts
- John XXI remains the only Portuguese pope.
- He was one of the most accomplished physicians ever elected pope.
- His Summulae Logicales became one of the most influential logic textbooks of the Middle Ages, though modern scholars debate its authorship.
- There has never been a Pope John XX because of a medieval numbering error.
- He died after the collapse of his private study, one of the most unusual papal deaths in history.
Legacy
Pope John XXI stands among the most intellectually gifted men ever elected to the papacy. His remarkable achievements in philosophy, medicine, logic, and theology reflected the vibrant scholarly culture of the thirteenth century. By encouraging universities and supporting both theological and scientific inquiry, he demonstrated the Catholic conviction that faith and reason are harmonious paths to truth.
Although his pontificate lasted less than a year, John’s love of learning left an enduring example for the Church. His tragic death in the collapse of his study deprived Christendom of a pope whose scholarship and pastoral leadership promised even greater contributions. Even so, his memory remains that of a pontiff who united deep faith with intellectual excellence.
Did You Know?
There has never been a Pope John XX. Because medieval papal lists mistakenly counted one pope named John XIV twice, later numbering became confused. When Pedro Julião was elected in AD 1276, he accepted the name John XXI, believing there had already been a John XX. Historians later discovered the mistake, but the numbering has never been changed, so the Church still has John XXI without ever having had a John XX.
Why Pope John XXI Matters
Pope John XXI exemplified the Church’s long tradition of valuing both faith and reason. As a physician, philosopher, theologian, and educator, he encouraged universities and promoted the pursuit of truth in every legitimate field of knowledge. His brief pontificate reminds Catholics that intellectual excellence and deep Christian faith are not rivals but partners in the search for wisdom.
CatholicG33k Historical Highlight
The Scholar Pope Who Had No Predecessor Named John XX
When Pedro Julião became Pope John XXI, he brought to the papacy one of the finest scholarly minds of the Middle Ages. A physician, philosopher, and theologian, he believed that every authentic discovery in science or philosophy ultimately points toward the Creator. Ironically, his chosen papal name reflects one of history’s curious mistakes: because of medieval errors in papal lists, he became John XXI, even though there had never actually been a John XX. His tragic death in the collapse of his private study ended a promising pontificate, but his commitment to learning continues to symbolize the Church’s enduring harmony between faith and reason.
Sources and Further Study
Scripture References
- Proverbs 9:10
- Wisdom 7:7
- Matthew 16:18-19
- John 21:15-17
- James 1:5
- Colossians 2:2-3
- 1 Peter 5:2-4
Primary Historical Sources
- Sacred Scripture (Douay-Rheims Bible)
- Papal Registers of John XXI
- Summulae Logicales (traditionally attributed)
- Thesaurus Pauperum
- William of Nangis, Chronicon
- Martin of Opava, Chronicon Pontificum et Imperatorum
- Early medieval papal catalogues
Timeline
Born as Pedro Julião
Cardinal-Bishop of Tusculum
Elected Pope
Promotes scholarship and Church reform
Injured when his study collapses
Dies at Viterbo