1089

1089 (MLXXXIX) was a common year starting on Monday of the Julian calendar, the 1089th year of the Common Era (CE) and Anno Domini (AD) designations, the 89th year of the 2nd millennium, the 89th year of the 11th century, and the 10th and last year of the 1080s decade. As of the start of 1089, 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:	1086 1087 1088 – 1089 – 1090 1091 1092

Asia

• Rama Varma Kulashekhara is crowned in Kerala.
• Palmyra is destroyed by an earthquake.

Europe

• Northumbria is divided by the Normans into the counties of Northumberland, County Palatine of Durham, Yorkshire, Westmorland and Lancashire.
• August 11 – A powerful earthquake is recorded in Britain.
• June 22 – Gaston IV of Bearn and the Frankish crusaders take the Aragonese city of Monzón from the emir of Zaragoza.

Religion

• Cîteaux Abbey, the first Cistercian monastery, is founded in southern France.
• The Synod of Melfi under Pope Urban II issued decrees against simony and the clerical marriage.

Births

• • Dahui Zonggao, Chinese Zen Buddhist monk (d. 1163)
  • Han Shizhong, Chinese general (d. 1151)

Deaths

• May 24 – Lanfranc, Archbishop of Canterbury
• May 31 – Sigwin von Are, Archbishop of Cologne
• September 29 (or 30) – Theobald III, Count of Blois
• November 11 – Saint Peter Igneus, Italian Benedictine monk