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Why was the earl of Strafford executed in 1641?

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Painting of the Battle of Naseby shows cavalry and infantry clashing, with soldiers on horseback leading a charge and fallen fighters on the ground amid the chaos of battle. — English Civil Wars *Battle of Naseby*, by an unknown artist. The victory of the Parliamentarian New Model Army, under Sir Thomas Fairfax and Oliver Cromwell, over the Royalist army, commanded by Prince Rupert, at the Battle of Naseby (June 14, 1645) marked the decisive turning point in the English Civil War.

Thomas Wentworth, 1st Earl of Strafford, was executed in 1641 primarily because he was viewed as the chief architect of King Charles I’s authoritarian policies and a major threat to Parliament.1

Following his recall from Ireland to manage the disastrous Bishops’ Wars, Strafford became the primary target of the Long Parliament. Led by John Pym, Parliament impeached him for subverting the laws of the realm. The prosecution specifically charged him with attempting to use the Irish army to suppress the King’s opponents in England.12

When his trial appeared unlikely to result in a conviction, Pym introduced a bill of attainder—a legislative act that condemned him to death without a formal judicial verdict. Intimidated by popular rioting, Parliament passed the bill, and King Charles, fearing for the safety of his family, ultimately signed it. Strafford was executed on May 12, 1641.12