Editing 1089 (section)

== Events ==
<onlyinclude>

=== By place ===

==== Europe ====
* April 20 (possible date) &ndash; [[Demetrius Zvonimir]], [[Kingdom of Croatia (925–1102)|king of Croatia]], dies after a 12-year reign, and is succeeded by [[Stephen II of Croatia|Stephen II]]. Zvonimir's widow, [[Helena of Hungary, Queen of Croatia]], plots the inheritance of the Croatian crown for her brother, King [[Ladislaus I of Hungary]].
* [[June 24]] &ndash; ''[[Reconquista]]'': [[Gaston IV, Viscount of Béarn]] (supported by French [[crusade]]rs) reconquers the Aragonese city of [[Monzón]] from Emir [[Al-Mustain II]] of the [[Taifa of Zaragoza]].<ref>{{cite journal |last=Canellas |first=Angel |title=Las Cruzadas de Aragon en el Siglo XI |journal=Argensola: Revista de Ciencias Sociales del Instituto de Estudios Altoaragoneses |issn=0518-4088 |volume=7 |year=1951 |url=http://dialnet.unirioja.es/servlet/fichero_articulo?codigo=2110493&orden=81753 |access-date=22 February 2012 |archive-url=https://web.archive.org/web/20140714172023/http://dialnet.unirioja.es/servlet/fichero_articulo?codigo=2110493&orden=81753 |archive-date=July 14, 2014 |url-status=live |df=mdy-all }}</ref>
* [[August 18]] &ndash; [[Henry IV, Holy Roman Emperor]], marries [[Eupraxia of Kiev]] (daughter of Grand Prince [[Vsevolod I of Kiev|Vsevolod I]]) at [[Cologne]]. She is crowned and assumes the name Adelaide (or Adelheid).
* King [[George II of Georgia|George II]] abdicates the throne in favour of his 16-year-old son [[David IV of Georgia|David IV]] ("the Builder") who becomes ruler of [[Kingdom of Georgia|Georgia]] (until [[1125]]).

==== England ====
* [[August 11]] &ndash; A powerful [[earthquake]] is recorded in [[Kingdom of England|England]].
* [[Kingdom of Northumbria|Northumbria]] is divided by King [[William II of England|William II]] into the counties of [[Northumberland]], [[County Palatine of Durham]], [[Yorkshire]], [[Westmorland]] and [[Lancashire]].{{Citation needed|date=September 2024}}

=== By topic ===

==== Religion ====
* [[March 21]] &ndash; [[Cîteaux Abbey]], the first [[Cistercians|Cistercian]] monastery, is established by a group of French monks under [[Robert of Molesme]] in southern [[France]].
* [[August 28]] &ndash; [[Braga Cathedral]] in the County of Portugal has its reconstruction (following 353 years of Muslim occupation) completed sufficiently for its consecration to the [[Virgin Mary]] to take place.
* [[September]]
** The [[Synod of Melfi (1089)|Synod of Melfi]], led by [[Pope Urban II]] (his first papal council), issues decrees against [[simony]] and [[clerical marriage]].<ref>{{cite web|title=Pope Bl. Urban II|work=Catholic Encyclopedia|url=http://www.newadvent.org/cathen/15210a.htm|via=New Advent|accessdate=2024-09-01}}</ref>
** A church council, held in [[Constantinople]], discuses relations between Eastern and Western [[Christianity]].<ref>{{Cite book |last=Siecienski|first=Anthony Edward|year=2010|title=The Filioque: History of a Doctrinal Controversy|publisher=Oxford University Press|url=https://books.google.com/books?id=auT8VbgOe48C |page=117|isbn=978-0-19-537204-5}}</ref></onlyinclude>