791

791 in various calendars
Gregorian calendar	791; DCCXCI
Ab urbe condita	1544
Armenian calendar	240; ԹՎ ՄԽ
Assyrian calendar	5541
Balinese saka calendar	712–713
Bengali calendar	198
Berber calendar	1741
Buddhist calendar	1335
Burmese calendar	153
Byzantine calendar	6299–6300
Chinese calendar	庚午年 (Metal Horse); 3488 or 3281; — to —; 辛未年 (Metal Goat); 3489 or 3282
Coptic calendar	507–508
Discordian calendar	1957
Ethiopian calendar	783–784
Hebrew calendar	4551–4552
Hindu calendars
- Vikram Samvat	847–848
- Shaka Samvat	712–713
- Kali Yuga	3891–3892
Holocene calendar	10791
Iranian calendar	169–170
Islamic calendar	174–175
Japanese calendar	Enryaku 10; (延暦１０年)
Javanese calendar	686–687
Julian calendar	791; DCCXCI
Korean calendar	3124
Minguo calendar	1121 before ROC; 民前1121年
Nanakshahi calendar	−677
Seleucid era	1102/1103 AG
Thai solar calendar	1333–1334
Tibetan calendar	阳金马年; (male Iron-Horse); 917 or 536 or −236; — to —; 阴金羊年; (female Iron-Goat); 918 or 537 or −235

Millennium:	1st millennium
Centuries:	7th century; 8th century ; 9th century;
Decades:	770s; 780s; 790s ; 800s; 810s;
Years:	788; 789; 790; 791 ; 792; 793; 794;

Year 791 (DCCXCI) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. The denomination 791 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

The Avars, a pagan Asian nomadic horde that has settled down in what is today Hungary, invade Friuli and Bavaria. King Charlemagne assembles a Frankish army, and marches down the Danube River to ravage Avar territory. A Frankish-Lombard expeditionary force, under his son Pepin, (king of the Lombards) invades the Drava Valley and devastates Pannonia.
Summer – Charlemagne loses most of his riding and baggage horses during an equine epidemic; many Saxons take advantage of Charlemagne's Avar setback and rebel once more.^[1]
September 14 – Alfonso II, the son of former king Fruela I, becomes ruler of Asturias (Northern Spain). He moves the capital to Oviedo, the commercial centre of the region.

Princes Ælf and Ælfwine of Northumbria, the sons of former king Ælfwald I, are persuaded to leave their sanctuary in York Minster, and are immediately forcibly drowned in Wonwaldremere, at the instigation of King Æthelred I.

Emir Idris I, founder of the Idrisid dynasty and kingdom of Morocco, is poisoned on orders of Caliph Harun al-Rashid.^[2]^[3] He is succeeded by his son Idris II (only just two months old), who is raised by his mother Kenza among the Berbers of Volubilis.

April – Tang forces retake the protectorate of Annan from rebelling Annamese chieftains Đỗ Anh Hàn, Phùng Hưng and Phùng An.^[4]

^ David Nicolle (2014). The Conquest of Saxony AD 782–785, p. 79. ISBN 978-1-78200-825-5
^ Rogerson, Barnaby (2010). Marrakesh, Fez and Rabat. London: Cadogan Guides. p. 238. ISBN 978-1-86011-432-8.
^ "The History of Volubilis". Volubilis Project. September 25, 2003. Archived from the original on April 24, 2012. Retrieved October 29, 2012.
^ Taylor, K.W. (2013). A History of the Vietnamese. Cambridge University Press. p. 40. ISBN 9780520074170.