865

865 in various
AG
Thai solar calendar	1407–1408
Tibetan calendar	阳木猴年; (male Wood-Monkey); 991 or 610 or −162; — to —; 阴木鸡年; (female Wood-Rooster); 992 or 611 or −161

Millennium:	1st millennium
Centuries:	8th century; 9th century ; 10th century;
Decades:	840s; 850s; 860s ; 870s; 880s;
Years:	862; 863; 864; 865 ; 866; 867; 868;

Viking invasion in East Anglia with the routes of the Great Heathen Army

Events

King Louis the German divides the East Frankish Kingdom among his three sons. Carloman receives Bavaria (with more lands along the Inn River). He gives Saxony to Louis the Younger (with Franconia, and Thuringia) and Swabia (with Raetia) to Charles the Fat. Louis arranges marriages into the local aristocracy, for his sons to hold important territories along the frontiers.
King
Lothair II, threatened with excommunication, takes back his first wife, Teutberga. She expresses her desire for an annulment, but this is refused by Pope Nicholas I
.

Boris I, ruler (knyaz) of the Bulgarian Empire, suppresses a revolt, and orders the execution of 52 leading boyars, along with their whole families.

The Great Heathen Army (probably no more than 1,000 men) of Vikings, led by Ivar the Boneless and Halfdan Ragnarsson, invades East Anglia. King Edmund of East Anglia buys peace with a supply of horses.
Viking king
Northumbrians in battle, and killed by being thrown into a pit filled with poisonous snakes, on the orders of King Ælla of Northumbria
.

Caliphal Civil War: An armed conflict starts between the rival Muslim caliphs al-Musta'in and al-Mu'tazz. They fight to determine who takes control over the Abbasid Caliphate (until 866
).

hymnographer, dies. She is one of the first Early Medieval composers of many hymns
.

Millennium:	1st millennium
Centuries:	8th century 9th century 10th century
Decades:	840s 850s 860s 870s 880s
Years:	862 863 864 865 866 867 868