What Happened in 1030
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- Jul 29 Battle of Stiklestad - Norwegian King Olaf II killed trying to reclaim the throne. One of the most famous Norwegian battles
- Jul 26 Stanislaus, Polish clergyman (Bishop of Kraków, 1072-79), martyr, and Catholic saint, born in Szczepanowa, Kingdom of Poland, (d. 1079)
- Jan 31 William V ('the Great"), Duke of Aquitaine (995-10300 and Count of Poitier (969-1030), dies at 60
- Apr 30 Mohammud van Ghazna, Turkish mayor (G'widen)/Islamic ruler, dies
- Jul 29 Olaf II Haraldsson, King of Norway, dies in battle of Stiklestad at 34 or 35
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List of Years