Editing 644

{{short description|Calendar year}}
{{For|highways with this number|List of highways numbered 644}}
{{Use mdy dates|date=February 2011}}
{{About year|644}}
{{Year nav|644}}
{{M1 year in topic}}
[[File:Saint Oswine.jpg|upright=1.35|thumb|King [[Oswine of Deira]] (644–651)]]
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Year '''644''' ('''[[Roman numerals|DCXLIV]]''') was a [[leap year starting on Thursday]] of the [[Julian calendar]]. The denomination 644 for this year has been used since the early medieval period, when the [[Anno Domini]] [[calendar era]] became the prevalent method in Europe for naming years.

== Events ==
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=== By place ===

==== Asia ====
* Emperor [[Emperor Taizong of Tang|Taizong]] of the [[Tang Dynasty]] sends a Chinese expeditionary force, to [[Tang campaigns against Karasahr|invade and annex]] the [[Tarim Basin]] kingdom of [[Karasahr]] in [[Xinjiang]], a vassal of the [[Western Turkic Khaganate]]. The [[oasis]] state is conquered, and Western Turks sent to assist Karasahr are defeated by the Tang forces.<ref>{{cite book | last = Wechsler | first = Howard J. | chapter = T'ai-tsung (reign 626–49) the consolidator | title = The Cambridge History of China, Volume 3: Sui and T'ang China, 589–906, Part I | editor-last = Twitchett | editor-first = Dennis | publisher = Cambridge University Press | location = Cambridge | year = 1979 | isbn = 978-0-521-21446-9 |page=226}}</ref>
* [[Zenkoji]], a [[Buddhist temple]] and landmark spot in [[Nagano (city)|Nagano]], Japan, is officially built by [[Empress Kogyoku]].{{citation needed|date=December 2016}}

==== Britain ====
* [[Oswine of Deira|Oswine]], son of the late king [[Osric of Deira]], manages to establish himself as king of [[Deira]] ([[Northern England]]) despite armed objections from King [[Oswiu of Northumbria|Oswiu of Bernicia]]. His succession, probably the choice of the people of Deira, splits the [[Kingdom of Northumbria]].<ref name=parker>[http://www.newadvent.org/cathen/11349a.htm Parker, Anselm. "St. Oswin". The Catholic Encyclopedia. Vol 11. New York: Robert Appleton Company, 1911. 28 Mar. 2013]</ref>

==== Byzantine Empire ====
* [[Valentinus (usurper)|Valentinus]], Byzantine general, attempts to usurp the [[throne]] of his son-in-law [[Constans II]]. He appears at the gates of [[Constantinople]] with a contingent of Byzantine troops, and demands to be crowned emperor. His claim is rejected, and Valentinus is [[Lynching|lynched]] by the populace.<ref>{{PMBZ|title=Ualentinos (#8545)|volume=A5|pages=71}}</ref>

==== Islamic Empire ====
* [[November 3]] &ndash; The second caliph [[Umar]], {{reign|634|644}}, dies of wounds inflicted by the Persian slave [[Abu Lu'lu'a Firuz]] at [[Medina]]. On his death bed he appoints a committee to determine his successor. They select [[Uthman ibn Affan]], who becomes the third [[caliph]] of the [[Rashidun Caliphate]].

== Births ==
* [[K'inich K'an Joy Chitam II]], ruler of [[Palenque]] 
* [[Li Jiao (Tang dynasty)|Li Jiao]], chancellor of the [[Tang dynasty]] (d. [[713]])

== Deaths ==
* [[January 17]] &ndash; [[Sulpitius the Pious]], French bishop and saint
* [[October 10]] &ndash; [[Paulinus of York|Paulinus]], [[Archbishop of York]]<ref name=Handbook221>{{cite book |author1=Fryde, E. B. |author2=Greenway, D. E. |author3=Porter, S. |author4=Roy, I. |title=Handbook of British Chronology|edition=Third revised |publisher=Cambridge University Press |year=1996 |isbn=0-521-56350-X|page=221}}</ref>
* [[Otto (mayor of the palace)|Otto]], [[mayor of the palace]] ([[Austrasia]]) 
* [[Radulf, King of Thuringia|Radulf]], king of [[Thuringia]] (approximate date)
* [[Trudpert]], Irish [[missionary]] (or [[607]])
* [[Abu Lu'lu'a Firuz]], assassin of Umar I
* [[Umar|Umar I]], Muslim [[caliph]] ({{reign|634|644}})
* [[Valentinus (usurper)|Valentinus]], Byzantine general and [[usurper]]

== References ==
{{Reflist}}

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[[Category:644| ]]