Throughout the 1530s and into the 1540s more than 300 people were executed for treason, most for rebelling against the new religious order. Among Henry’s councilors, Sir Thomas More refused to recognize the king as supreme head of the church and was executed for his Catholicism, along with a number of bishops and prominent nobles. In 1536 a serious rebellion, known as the Pilgrimage of Grace, occurred in the northern counties. The rebellion combined economic grievances with an attachment to the institutions of the Catholic Church. It represented the most serious threat to Henry’s reign, although it was ultimately quelled.
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