Editing 1252 (section)

== Events ==
<onlyinclude>

=== By place ===

==== Europe ====
* [[April 6]] &ndash; Saint [[Peter of Verona]] is assassinated by [[Carino of Balsamo]].<ref name=":0c">{{Cite book|url=https://books.google.com/books?id=OAokDwAAQBAJ&q=1252+Peter+of+Verona&pg=PT32|title=The Martyred Inquisitor: The Life and Cult of Peter of Verona (†1252)|last=Prudlo|first=Donald|publisher=Routledge|year=2016|isbn=9781351885911|series=Church, Faith and Culture in the Medieval West|location=New York and London|pages=13–14|language=en|orig-year=2008}}</ref><ref name=":1">{{Cite book|url=https://books.google.com/books?id=tixPAAAAYAAJ&q=1252+Peter+of+Verona&pg=PA249|title=The Bloody Theatre, Or Martyrs' Mirror, of the Defenceless Christians: Who Suffered and Were Put to Death for the Testimony of Jesus, Their Savior, from the Time of Christ Until the Year A.D. 1660|last=van Braght|first=Thieleman J.|publisher=David Miller|year=1837|location=Lancaster, PA|pages=249|language=en}}</ref>
* [[May 15]] &ndash; [[Pope Innocent IV]] issues the [[papal bull]] ''[[Ad exstirpanda]]'', which authorizes the [[torture]] of [[heretic]]s in the [[Medieval Inquisition]]. Torture quickly gains widespread usage across [[Catholicism|Catholic]] [[Europe]].<ref>{{Cite book|url=https://books.google.com/books?id=reavCQAAQBAJ&q=1252+Ad+extirpanda&pg=PA5|title=Renaissance Inquisitors: Dominican Inquisitors and Inquisitorial Districts in Northern Italy, 1474-1527|last=Tavuzzi|first=Michael|publisher=BRILL|year=2007|isbn=9789047420606|location=Leiden, Boston|pages=4–5|language=en}}</ref><ref>{{Cite book|url=https://books.google.com/books?id=Sxv1BgAAQBAJ&q=1252+Ad+extirpanda&pg=PA252|title=Reception Theory and Biblical Hermeneutics|last=Parris|first=David Paul|publisher=Wipf and Stock Publishers|year=2009|isbn=9781630878153|series=Princeton Theological Monograph Series|location=Eugene, OR|pages=252|language=en}}</ref>
*[[June 1]] &ndash; [[Alfonso X]] is proclaimed king of Castile and León.<ref>{{Cite book|url=https://books.google.com/books?id=zY5spauGS0AC&q=1252+Alfonso+X&pg=PA1|title=Alfonso X and the Jews: An Edition of and Commentary on Siete Partidas 7.24 "De Los Judíos"|last=Carpenter|first=Dwayne E.|publisher=University of California Press|year=1986|isbn=9780520099517|series=Modern Philology|volume=115|location=Berkeley, Los Angeles, London|pages=1|language=en}}</ref>
*[[July]] &ndash; The settlement of [[Stockholm]] in [[Sweden]] is founded, by [[Birger Jarl]].<ref>{{Cite book|url=https://books.google.com/books?id=JkB-AgAAQBAJ&q=1252+Stockholm&pg=PA27|title=Stockholm: The Making of a Metropolis|last=Hall|first=Thomas|publisher=Routledge|year=2009|isbn=9781134298594|location=London and New York|pages=26|language=en}}</ref><ref>{{Cite journal|last=Andersson|first=Kjell|date=August 2005|title=Beginning Swedish Genealogy|url=https://books.google.com/books?id=PTgEAAAAMBAJ&q=1252+Stockholm+Birger+Jarl&pg=PA44|journal=[[Ancestry Magazine]]|volume=23|issue=4|pages=44|via=Google Books}}</ref>
* [[December 25]] &ndash; [[Christopher I of Denmark]] is crowned King of [[Denmark]], in the [[Lund Cathedral]].<ref>{{Cite book|url=https://books.google.com/books?id=EIsBAAAAYAAJ&q=1252+Christopher+Denmark&pg=PA223|title=History of Denmark, Sweden, and Norway|last=Dunham|first=Samuel Astley|publisher=Longman, Orme, Brown, Green & Longmans and John Taylor|year=1839|volume=II|location=London|pages=223|language=en}}</ref><ref>{{Cite book|url=https://books.google.com/books?id=ugrPovHoUYMC&q=1252+Christopher+Denmark&pg=PA16|title=Legal Procedure and Practice in Medieval Denmark|last=Andersen|first=Per|publisher=BRILL|year=2011|isbn=9789004204768|location=Leiden, Boston|pages=16|language=en}}</ref>
* The [[Poland|Polish]] [[Lubus Land|land of Lebus]] is incorporated into the German state of [[Brandenburg]], marking the start of Brandenburg's expansion into previously Polish areas ([[Neumark (region)|Neumark]]).<ref>{{Cite book|url=https://books.google.com/books?id=y7oRAAAAYAAJ&q=1252+Brandenburg+Lebus&pg=PA17|title=The History of Germany: From the Earliest Period to the Present Time|last=Menzel|first=Wolfgang|publisher=Henry G. Bohn|year=1862|volume=II|location=London|pages=17|language=en}}</ref>
* The [[Lithuania]]n city of [[Klaipėda]] (''Memel'') is founded by the [[Teutonic Knights]].<ref>{{Cite book|url=https://books.google.com/books?id=-3ppAAAAMAAJ&q=1252+Klaipeda|title=Ancient Lithuania and the History of Deltuva|last=Devenis|first=Keistutis P.|publisher=VAGA|year=2002|location=Vilnius, Lithuania|pages=112|isbn=9785415016297|language=en}}</ref><ref>{{Cite book|url=https://books.google.com/books?id=slGwAAAAIAAJ&q=1252+Klaipeda|title=Baltic Cities: Perspectives on Urban and Regional Change in the Baltic Sea Area|last1=Åberg|first1=Martin|last2=Peterson|first2=Martin|publisher=Nordic Academic Press|year=1997|isbn=9789189116030|location=Lund, Sweden|pages=107|language=en}}</ref>
* The town and monastery of [[Orval Abbey]] in [[Belgium]] burn to the ground; rebuilding takes 100 years.<ref>{{Cite book|url=https://books.google.com/books?id=Ga4MYyZq-RMC&q=1252+Orval+Abbey&pg=PA630|title=The Oxford Companion to Beer|last=Villa|first=Keith|publisher=Oxford University Press|year=2012|isbn=9780195367133|editor-last=Oliver|editor-first=Garrett|location=Oxford, New York|pages=630|language=en}}</ref>
* [[Thomas Aquinas]] travels to the [[University of Paris]], to begin his studies there for a [[master's degree]].<ref>{{Cite book|url=https://books.google.com/books?id=ROxGR0Z-PdwC&q=1252+Aquinas&pg=PA28|title=The Essential Aquinas: Writings on Philosophy, Religion, and Society|last1=Aquinas|first1=Thomas|last2=Hood|first2=John Y. B.|publisher=Greenwood Publishing Group|year=2002|isbn=9780275978181|location=Westport, CT and London|pages=28|language=en}}</ref><ref>{{Cite book|url=https://books.google.com/books?id=n-YRDAAAQBAJ&q=1252+Aquinas&pg=PA4|title=Thomas Aquinas's Summa Contra Gentiles: A Guide and Commentary|last=Davies|first=Brian|publisher=Oxford University Press|year=2016|isbn=9780190456542|location=Oxford and New York|pages=4|language=en}}</ref>
* In [[astronomy]], work begins on the recording of the [[Alfonsine tables]].<ref>{{Cite book|url=https://books.google.com/books?id=rDfpCAAAQBAJ&q=1252+Alfonsine+Tables&pg=PA144|title=The Alfonsine Tables of Toledo|last1=Chabás|first1=José|last2=Goldstein|first2=B. R.|publisher=Springer Science & Business Media|year=2013|isbn=9789401702133|location=Boston, MA|pages=144|language=en}}</ref>

==== Asia ====
* The [[List of Japanese classic texts|classic Japanese text]] ''Jikkunsho'' is completed.<ref>{{Cite book|chapter-url=https://books.google.com/books?id=BkAwngNsqTIC&q=1252+Jikkunsho&pg=RA7-PA1|title=Feminism and the Periodical Press, 1900-1918|last=Tooley|first=Sarah A.|publisher=Taylor & Francis|year=2006|isbn=9780415320269|editor-last=Delap|editor-first=Lucy|location=London and New York|language=en|chapter=The Women of New Japan|orig-year=1910|editor-last2=DiCenzo|editor-first2=Maria|editor-last3=Ryan|editor-first3=Leila}}</ref><ref>{{Cite book|url=https://books.google.com/books?id=S0dVxWwR6RcC&q=1252+Jikkunsho&pg=PA453|title=Spirit and Self in Medieval China: The Shih-shuo Hsin-yü and Its Legacy|last=Qian|first=Nanxiu|publisher=University of Hawaii Press|year=2001|isbn=9780824823979|location=Honolulu, HI|pages=453|language=en}}</ref>
* The [[Chinese era name|Chinese era]] ''Chunyou'' ends.<ref>{{Cite book|url=https://books.google.com/books?id=DkWwCQAAQBAJ&q=1252+Chunyou&pg=PA15|title=Ritual Alliances of the Putian Plain|last1=Dean|first1=Kenneth|last2=Zheng|first2=Zhenman|publisher=BRILL|year=2010|isbn=9789047440178|volume=Two: A Survey of Village Temples and Ritual Activities|location=Leiden, Boston|pages=15|language=en}}</ref>
* The [[Mongols]] take the westernmost province of the [[Song dynasty]] empire.<ref>{{Cite book|url=https://books.google.com/books?id=uiOMDgAAQBAJ&q=1252+Mongols+Song&pg=PA125|title=The Mongols and the Islamic World: From Conquest to Conversion|last=Jackson|first=Peter|publisher=Yale University Press|year=2017|isbn=9780300227284|location=New Haven, CT and London|pages=125|language=en}}</ref></onlyinclude>