AD 757

757 in various calendars
Gregorian calendar	757; DCCLVII
Ab urbe condita	1510
Armenian calendar	206; ԹՎ ՄԶ
Assyrian calendar	5507
Balinese saka calendar	678–679
Bengali calendar	164
Berber calendar	1707
Buddhist calendar	1301
Burmese calendar	119
Byzantine calendar	6265–6266
Chinese calendar	丙申年 (Fire Monkey); 3454 or 3247; — to —; 丁酉年 (Fire Rooster); 3455 or 3248
Coptic calendar	473–474
Discordian calendar	1923
Ethiopian calendar	749–750
Hebrew calendar	4517–4518
Hindu calendars
- Vikram Samvat	813–814
- Shaka Samvat	678–679
- Kali Yuga	3857–3858
Holocene calendar	10757
Iranian calendar	135–136
Islamic calendar	139–140
Japanese calendar	Tenpyō-shōhō 9 / Tenpyō-hōji 1; (天平宝字元年)
Javanese calendar	651–652
Julian calendar	757; DCCLVII
Korean calendar	3090
Minguo calendar	1155 before ROC; 民前1155年
Nanakshahi calendar	−711
Seleucid era	1068/1069 AG
Thai solar calendar	1299–1300
Tibetan calendar	阳火猴年; (male Fire-Monkey); 883 or 502 or −270; — to —; 阴火鸡年; (female Fire-Rooster); 884 or 503 or −269

Millennium:	1st millennium
Centuries:	7th century; 8th century ; 9th century;
Decades:	730s; 740s; 750s ; 760s; 770s;
Years:	754; 755; 756; 757 ; 758; 759; 760;

Year 757 (DCCLVII) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. The denomination 757 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

Tassilo III, duke of Bavaria, recognizes the supremacy of King Pepin III ("the Short") at an assembly held at Compiègne (Northern France), and becomes a vassal of the Frankish Kingdom. He swears an oath (commendatio) to Pepin, and promises his allegiance.^[1]
King Alfonso I ("the Catholic") dies at Cangas (modern Spain), after an 18-year reign. He is succeeded by his son Fruela I as ruler of Asturias.

King Æthelbald of Mercia is murdered by his own household in a palace coup. He is succeeded briefly by Beornred, but he is, in turn, ousted by Æthelbald's distant cousin, Offa. In the meantime, Mercian supremacy over Southern England is lost.
King Sigeberht of Wessex acts unjustly and is removed from power by a council of nobles, in favor of Cynewulf. Sigeberht is given control of Hampshire, probably as ealdorman, but he murders one of his own men and is driven out.

The city of Sijilmasa (modern Morocco) is founded by the Miknasa, a Zenata Berber tribe. They adopt Kharijism-Islam, and establish the Emirate of Sijilmasa in the northern Sahara. It becomes a wealthy trading center as the western end-point of the Trans-Saharan trade.^[2]

January 29 – An Lushan, leader of a revolt and emperor of Yan, is murdered by his own son An Qingxu at Luoyang. He succeeds his father, and appoints Shi Siming as his deputy. The military leaders of the Tang Dynasty are able to retake both of the capitals at Chang'an and at Luoyang. The rebel army is forced to retreat east.
Battle of Suiyang: A Tang garrison (7,000 men) under Zhang Xun defend their fortress against the rebel army at Suiyang. Zhang makes multiple attempts to get food from nearby fortresses, but this is refused. After a desperate 10-month siege, Suiyang is overrun by rebel forces who take the city. Because of famine an estimated 20,000 to 30,000 citizens are cannibalized, only 400 people are left.
December 8 – Du Fu, Chinese poet, returns to Chang'an as a member of Emperor Xuan Zong's court, after having escaped the city during the An Lushan Rebellion.

April 26 – Pope Stephen II dies at Rome after a 5-year reign, in which he has freed the papacy from Byzantine rule. Stephen allies with Pepin III against the Lombards, and becomes the first temporal sovereign of the Papal States. He is succeeded by his brother Paul I, as the 93rd pope of the Catholic Church.

^ "PÉPIN LE BREF (741-768)" (in Latin and French). Noctes-gallicanae.org. Archived from the original on December 5, 2009. Retrieved February 13, 2012.
^ Gilbert Meynier (2010). L'Algérie cœur du Maghreb classique. De l'ouverture islamo-arabe au repli (658-1518). Paris: La Découverte; p.26.

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