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Which Welsh rebellion did Prince Henry help suppress before becoming king?
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Henry V
English king Henry V, painting by an unknown artist; in the National Portrait Gallery, London.
Before becoming king, Prince Henry (the future Henry V) helped suppress the rebellion led by the Welsh leader Owain Glyn Dŵr.12
Beginning in 1400, Glyn Dŵr launched an uprising against English rule that grew into a national struggle for Welsh independence. While King Henry IV led several unsuccessful expeditions into the region, Prince Henry achieved greater success in reasserting royal control. By 1405, the tide of the conflict turned against the rebels; Prince Henry defeated Glyn Dŵr twice that year and eventually captured his main strongholds by 1408–09.12