The Trial of Oliver Plunkett centers on the true story of the trial and execution of Oliver Plunkett, the Roman Catholic Archbishop of Armagh in the 17th century. This event was part of the anti-Catholic hysteria known as the 'Popish Conspiracy' in England. Oliver Plunkett was arrested in Dublin in 1679. He was accused of high treason, conspiring with the French to invade Ireland and raising funds to support the rebellion. Plunkett was sentenced to death by hanging, drawing, and quartering, a brutal punishment reserved for traitors. The execution took place at Tyburn in 1681. He became the last Catholic martyr to be executed in England. Despite his gruesome death, Oliver Plunkett maintained his honor and forgave his accusers. His story became a symbol of courage and faith. He was later beatified in 1920 and canonized as a saint in 1975. The story of his tragic trial highlighted the injustice and religious fanaticism of the time.