1080

1080 (MLXXX) was a leap year starting on Wednesday of the Julian calendar, the 1080th year of the Common Era (CE) and Anno Domini (AD) designations, the 80th year of the 2nd millennium, the 80th year of the 11th century, and the 1st year of the 1080s decade. As of the start of 1080, the Gregorian calendar was 6 days ahead of the Julian calendar, which was the dominant calendar of the time.

Millennium:	2nd millennium
Centuries:	10th century – 11th century – 12th century
Decades:	1050s  1060s  1070s  – 1080s –  1090s  1100s  1110s
Years:	1077 1078 1079 – 1080 – 1081 1082 1083

Rudolf of Rheinfelden loses his arm in combat during the Battle on the Elster.

Events

• William I of England, in a letter, reminds the Bishop of Rome that the King of England owes him no allegiance.
• King Alfonso VI of Castile establishes the Latin liturgy in Catholic church in place of the Mozarabic rite.
• Ísleifur Gissurarson, the first bishop in Iceland, dies while giving mass in Skálholt church.
• Osmund, Bishop of Salisbury, builds Devizes Castle.

Births

• Edith Matilda of Scotland, Queen consort of King Henry I of England (died 1118)
• Thomas of Canterbury, Anglo-Norman nobleman (died 1159)

Deaths

• King Harald III of Denmark (born c.1044)
• Andronikus VI, Byzantine emperor
• Ísleifur Gissurarson, Icelandic bishop