The Saxon revolt refers to the struggle between the Salian dynasty ruling the Holy Roman Empire and the rebel Saxons during the reign of Henry IV. The conflict reached its climax in the period from summer 1073 until the end of 1075, in a rebellion that involved several clashes of arms.
The Saxon Rebellion or Rebellion of the Saxons is also commonly called the Saxon Uprising.
Undercurrents of discord between the Salian royal family and the Saxons already existed under Henry's father, Emperor Henry III. This may have been primarily due to his Rhenish Franconian origin as well as his numerous stays in the Imperial Palace of Goslar, which imposed a disproportionately high economic burden on the surrounding…
Wikipedia https://en.wikipedia.org/wiki/Saxon_revolt_of_1073–1075
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