1151 ( MCLI ) was a common year starting on Monday of the Julian calendar , the 1151st year of the Common Era (CE) and Anno Domini (AD) designations, the 151st year of the 2nd millennium , the 51st year of the 12th century , and the 2nd year of the 1150s decade. As of the start of 1151, the Gregorian calendar was 7 days ahead of the Julian calendar, which was the dominant calendar of the time.

Events [ change | change source ]

• September 7 ? Geoffrey of Anjou dies, and is replaced by his son Henry who is 18 years old.
• The first plague and fire insurance policy is issued in Iceland

Births [ change | change source ]

• April 3 ? Igor Svyatoslavich , Russian prince (d. 1202 )
• Unkei , Japanese sculptor (d. 1223 )

Deaths [ change | change source ]

• January 13 ? Abbot Suger , French statesman and historian (b. c. 1081)
• April 23 ? Adeliza of Leuven , queen of Henry I of England (b. 1103 )
• September 7 ? Geoffrey V, Count of Anjou (b. 1113 )