Editing 830 (section)

== Events ==
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=== By place ===
==== Britain ====
* King [[Wiglaf of Mercia]] regains control from [[Wessex]], and returns to the [[throne]].<ref name=Swanton_62>Swanton, ''Anglo-Saxon Chronicle'', pp.&nbsp; 62–63.</ref>

==== Byzantine Empire ====
* [[June 5]] &ndash; Emperor [[Theophilos (emperor)|Theophilos]], 16,  marries the [[Armenians|Armenian]] noblewoman [[Theodora (wife of Theophilos)|Theodora]], in the [[Hagia Sophia]] at [[Constantinople]]. He chooses her during a representation of a [[bride-show]]; she becomes empress (''[[List of Augustae|Augusta]]'') of the [[Byzantine Empire]].
* [[Arab–Byzantine wars|Byzantine–Arab War]]: Muslim reinforcements from [[Ifriqiya]] and [[Al-Andalus]] (modern [[Spain]]) defeat [[Byzantine Empire|Byzantine]] forces under Theodotus in [[Sicily]], but a [[plague (disease)|plague]] once again compels them to retreat to [[Mazara del Vallo]], and evacuate to [[North Africa]].

==== Europe ====
* Emperor [[Louis the Pious]] returns from a campaign in [[Brittany]], and is captured by his son [[Pepin I of Aquitaine|Pepin I]], king of [[Aquitaine]]. He is put under [[house arrest]] at [[Compiegne]], and his wife [[Judith of Bavaria (died 843)|Judith]] is incarcerated at [[Poitiers]].

==== North Africa ====
* The Ad-dimnah Hospital (''[[bimaristan]]'') is created in [[Kairouan]] (modern [[Tunisia]]), by the [[Aghlabids|Aghlabid]] emir [[Ziyadat Allah I of Ifriqiya|Ziyadat Allah I]].<ref>{{cite web|title=Al-Qayrawan hospital, Tunisia in 830|url=http://www.shininghistory.com/2009/06/al-qayrawan-hospital-tunisia-in-830-ad.html|access-date=November 8, 2011|archive-url=https://web.archive.org/web/20120425151531/http://www.shininghistory.com/2009/06/al-qayrawan-hospital-tunisia-in-830-ad.html|archive-date=April 25, 2012|url-status=dead|df=mdy-all}}</ref>

==== South Asia ====
* About 830 an Arabian [[dhow]] sinks on its journey from China to Arabia near the Indonesian island of Belitung, carrying some 60,000 trade items, the largest collection of Tang dynasty artifacts outside of China ([[Belitung shipwreck]]).

=== By topic ===
==== Religion ====
* [[Nennius]], Welsh [[abbot]] of [[Bangor Cathedral|Bangor Fawr]], compiles the ''[[Historia Brittonum]]''. He is also known for the Historia's list of the 12 battles of [[King Arthur]] (approximate date).
* [[Hirsau Abbey]] (modern [[Germany]]) is founded by the [[Rhenish Franconia]]n count Erlafried of [[Calw]] (approximate date).
* [[Ansgar]], a Frankish [[missionary]], visits the trade city [[Birka]], located at [[Mälaren|Lake Mälaren]] in [[Sweden]] (approximate date).
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