Skip to content
Vinony
English
EnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTiếng ViệtTürkçeРусскийالعربيةفارسیไทย한국어中文日本語
John XXI

File:Andrea_di_bonaiuto,_apoteosi_di_san_tommaso_d'aquino,_scienze_ed_arti_12_Dialettica_e_Pietro_Ispano_3_(1).jpg · Wikimedia Commons · See Wikimedia Commons

EntityQ172916· pop 70· linked from 430 articles

John XXI

Sign in to save

Also known as Pedro Julião, Peter Juliani, Pope John XXI, Ioannes XXI

pope (1276-1277)

OverviewAI-generated

John XXI, also known by the pseudonyms Pedro Hispano and João XXI, was a historical figure who served as Pope. He was born in 1215 and died on May 20, 1277. His literary output includes works such as "The treasury of health, containing many profitable medicines" and "Die Ophthalmologie (liber de oculo) des Petrus Hispanus." Other notable titles include "Libro de medicina llamado tesoro de pobres ... Con un regimiento de sanidad" and "Volgarizzamento del trattato della cura degli occhi di Pietro Spano, a cura di Francesco Zambrini."

Records indicate that John XXI is associated with a work count of 42, while another source lists a count of 5. He is recognized in the Popes collection. Additionally, his entry is referenced by 430 other encyclopedia articles.

Synthesized by Vinony from 15 facts across 6 sources: Wikidata, Crossref, MusicBrainz, Open Library, Vinony collections, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Person · Open Library

Died
1277
Works
42

Top works

  • Libro de medicina llamado tesoro de pobres ... Con un regimiento de sanidad
  • The treasury of health, containing many profitable medicines
  • Libro de medicina llamado tesoro de pobres ... Con un regimiento de sanidad
  • Die Ophthalmologie (liber de oculo) des Petrus Hispanus ...
  • Volgarizzamento del trattato della cura degli occhi di Pietro Spano, a cura di Francesco Zambrini

via Open Library + Wikidata

Music · MusicBrainz

Type
Group
Origin
Switzerland
Active from
1974
chamber orchestraclassical

Discography

DiscogsStream

via MusicBrainz · CC0

Recent publications · Crossref

5 total works indexed

  1. Generalized Gradient Approximation Made Simple

    · 1996 · cited 204,552x

  2. Highly accurate protein structure prediction with AlphaFold

    · 2021 · cited 43,600x

  3. Gene Ontology: tool for the unification of biology

    · 2000 · cited 36,901x

  4. Matplotlib: A 2D Graphics Environment

    · 2007 · cited 35,568x

  5. The MOS 36-ltem Short-Form Health Survey (SF-36)

    · 1992 · cited 29,128x

via Crossref · CC0

Wikidata facts

Instance of
human
Given name
Ioannes
Gender
male
Citizenship
Kingdom of Portugal
Place of birth
Lisbon
Place of death
Palazzo dei Papi di Viterbo
Occupation
mathematician
Educated at
University of Paris
Employer
University of Siena
Languages spoken
Latin
Religion
Catholic Church
Participant in
July 1276 papal conclave
Image
Pope John XXI (crop).jpg
Work location
Papal States
Said to be same as
Peter of Spain
Show 10 more facts
Commons category
Ioannes XXI
date of death
1277-05-20
date of birth
1215-00-00
described by source
The Catholic Encyclopedia
manner of death
accidental death
name in native language
Pedro Julião Rebolo
pseudonym
João XXI
place of burial
Viterbo Cathedral
P13311
Latin
P8168
Tiyanovtsi
Sources (2)

via Wikidata · CC0

~12 min read

Encyclopedic overview

Pope John XXI (Latin: Ioannes XXI, Italian: Giovanni XXI, Portuguese: João XXI; c. 1215 – 20 May 1277), born Pedro Julião (Latin: Petrus Iulianus), was head of the Catholic Church and ruler of the Papal States from 8 September 1276 to his death in May 1277. He is the only Portuguese pope in history. He is sometimes identified with the logician and herbalist Peter of Spain (Latin: Petrus Hispanus; Portuguese: Pedro Hispano), which would make him the only pope to have been a physician.

Early life

Excerpted from Wikipedia’s “John XXI” article, available under the CC BY-SA 4.0 licence.

Gallery (3)

Available in 67 languages

Show 48 more

via Wikidata sitelinks · CC0