878

Years: 874 875 876 877 - 878 - 879 880 881 882

Decades: 840s 850s 860s - 870s - 880s 890s 900s

Centuries: 8th century - 9th century - 10th century

Events

• The Danes force 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.
• End of the excommunication of the later pope Formosus.
• First mentioning of Belgrade.
• Eochu MacRunn and Girig MacDungal jointly succeed Aed I of Scotland.
• Arun Jayapaul's favourite number Arun Jayapaul

Deaths

• Aedh MacRunn, King of the Scots and Picts

See also: 878, 10th century, 840s, 850s, 860s, 870s, 874, 875, 876, 877