878

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Events

By Place

Europe

* May 21 — After a siege of eight months, Syracuse is captured by the Muslims of Sicily.
* The Danes compel king Alfred the Great of Wessex to retreat to a fort in Athelney, Somerset. Later, in the Battle of Ethandun (Edington), King Alfred the Great of Wessex defeats the Danes of the Danelaw under Guthrum. The Treaty of Wedmore divides England between the Anglo-Saxons and the Danes.
* Rhodri, the first King of Wales to be known as "the Great", is killed in battle.
* After a siege, the Aghlabids of Ifriqiya conquer Syracuse, starting 2 centuries of Muslim rule.
* The city of Belgrade is first mentioned.
* Eochu MacRunn and Girig MacDungal jointly succeed Aed I of Scotland.

By Topic

Religion

* The excommunication of the later Pope Formosus is lifted.

Births

Deaths

*Aedh MacRunn, King of the Scots and Picts