991

This article is about the year 991. For the actual number, see 991 (number).

Millennium:	1st millennium
Centuries:	9th century – 10th century – 11th century
Decades:	960s  970s  980s  – 990s –  1000s  1010s  1020s
Years:	988 989 990 – 991 – 992 993 994

991 by topic
Arts, history, and science
Archaeology Architecture Art Literature Poetry Music Science
Countries
Lists of leaders
State leaders Colonial governors Religious leaders
Birth and death categories
Births Deaths
Establishments and disestablishments categories
Establishments Disestablishments
Works category
Works

991 (CMXCI) was a common year starting on Thursday of the Julian calendar, the 991st year of the Common Era (CE) and Anno Domini (AD) designations, the 991st year of the 1st millennium, the 91st year of the 10th century, and the 2nd year of the 990s decade. As of the start of 991, the Gregorian calendar was 5 days ahead of the Julian calendar, which was the dominant calendar of the time.

Europe

• Battle of Maldon: The Anglo-Saxons are beaten by Viking invaders led by Olaf Tryggvason, later Olaf I of Norway.
• Sweyn I of Denmark gets his throne back.

Births

• Sigurd Hlodvirsson, Earl of Orkney
• Abdullah Yousef, of Kuwait

Deaths

• Theophanu, empress, mother of Otto III (b. 956)
• Emperor En'yū, emperor of Japan (b. 959)

991 Media

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  Statue of Byrhtnoth at Maldon (Essex)