Years: 1037 1038 1039 - 1040 - 1041 1042 1043

Decades: 1010s 1020s 1030s - 1040s - 1050s 1060s 1070s

Centuries: 10th century - 11th century - 12th century

Events

• August 14 - King Duncan I is killed in battle against his first cousin and rival Macbeth. The later succeeds him as Scottish Monarch.

Births

Deaths

• August 14 - Duncan I, king of Scotland
• October 1 - Alan III, Duke of Brittany, poisoned

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For the U.S. Internal Revenue Service (IRS) form, see Form 1040.