Editing Pope John XXI (section)

== External links ==
{{Commons category|Ioannes XXI|Pope John XXI}}
* {{DNB-Portal|118557904}}
* {{DDB|Person|118557904}}
* J. P. Kirsch: [http://www.newadvent.org/cathen/08429c.htm Art. ''Pope John XXI (XX)''], in: The Catholic Encyclopedia, Vol. VIII (1910)
* Salvino Leone: {{webarchive |url=https://web.archive.org/web/20080623214358/http://frblin.club.fr/fiamc/04texts/jpxxi/jpxxi.htm#leone |date=June 23, 2008 |title=''John XXI: The physician who became pope'' }}
* Joke Spruyt: [http://plato.stanford.edu/entries/peter-spain/ ''Peter of Spain''] (2001), in: Stanford Encyclopedia of Philosophy

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{{s-bef|before=[[Pope Adrian V|Adrian V]]}}
{{s-ttl|title=[[Pope]]|years=1276&ndash;77}}
{{s-aft|after=[[Pope Nicholas III|Nicholas III]]}}
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{{Commons category|Ioannes XXI|John XXI}}
{{Popes}}
{{Catholicism}} 
{{History of the Catholic Church}}

{{Authority control}}

{{DEFAULTSORT:John 21}}
[[Category:Popes]]
[[Category:Portuguese cardinals]]
[[Category:Portuguese popes|John XXI]]
[[Category:Bishops of Braga]]
[[Category:Cardinal-bishops of Frascati]]
[[Category:13th-century Roman Catholic bishops in Portugal]]
[[Category:Roman Catholic archbishops of Braga]]
[[Category:13th-century writers in Latin]]
[[Category:Clergy from Lisbon|John XXI]]
[[Category:Accidental deaths in Italy|John XXI]]
[[Category:1215 births|John XXI]]
[[Category:1277 deaths|John XXI]]
[[Category:Academic staff of the University of Siena]]
[[Category:Viterbo Papacy]]
[[Category:13th-century popes]]
[[Category:Characters in the Divine Comedy]]