1084

1084 (MLXXXIV) was a leap year starting on Monday of the Julian calendar, the 1084th year of the Common Era (CE) and Anno Domini (AD) designations, the 84th year of the 2nd millennium, the 84th year of the 11th century, and the 5th year of the 1080s decade. As of the start of 1084, 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:	1081 1082 1083 – 1084 – 1085 1086 1087

Italy and Illyria during the rule of Robert Guiscard.

Events

• May – Sack of Rome by the Normans of Robert Guiscard.

Births

• David I of Scotland