Wikipedia has two articles on the Trial and execution of Charles I:
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High Court of Justice for the trial of Charles I
The High Court of Justice was the court established by the Rump Parliament to try Charles I, King of England, Scotland and Ireland. Even though this was an ''ad hoc'' tribunal that was specifically created for the purpose of trying the king, it ...
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Execution of Charles I
The execution of Charles I by beheading occurred on Tuesday, 30 January 1649 outside the Banqueting House on Whitehall. The execution was the culmination of political and military conflicts between the royalists and the parliamentarians in E ...
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