On August 22nd, 1553, John Dudley, the First Duke of Northumberland, was executed for his role in the attempted coup d'etat to place his daughter-in-law, Jane Dudley (nee Grey) on the throne, diverting the succession from Mary Tudor as Queen of England and Ireland.
On August 22nd, 1572, Thomas Percy, Seventh Earl of Northumberland, was executed for his role in the Northern Rebellion, which might have had the result of deposing Elizabeth I and placing Mary, the erstwhile Queen of Scots on the throne of England and Ireland (and Scotland).
What a fascinating circumstance, that two scions of the same household would die on the same date, with 19 years separating their executions! These two men have another thing in common: at the block both of them spoke strongly of their Catholic faith. John Dudley reverted to Catholicism while in the Tower of London--perhaps he hoped for mercy from Mary--and he publicly retracted and regretted the efforts of the Edwardine government to introduce Calvinist reforms, warning the people against listening to deceptive preachers teaching new things.
Thomas Percy was stubbornly recalcitrant, in the Elizabethan government's view, as a Catholic, not repenting of his betrayal of Elizabeth, but warning the English that they were schismatic. In defiance of the norms of executions, he did not repent of his sins against the queen or warn others against committing such sins after him.