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1100th anniversary: King Æthelstan of England secured the submission of four northern rulers:...

Mon, July 12, 2027

in 8 mo

Source

In 927, King Æthelstan of England secured the submission of four northern rulers: Constantine II of Scotland, Hywel Dda of Deheubarth, Ealdred I of Bamburgh, and Owain ap Dyfnwal of Strathclyde, leading to seven years of peace.

Source, method and history
Source
Wikipedia
How we know
Wikipedia "On this day" selected anniversary, 1100 years (927 to 2027).
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annual
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