Simon Fernandes time and piracy was an offence punishable by hanging, but in practice Fernandes was engaged in exactly the sort of behaviour to which Queen Elizabeth I of England was inclined to turn a blind eye. However, the Portuguese ambassador Francisco Giraldi vigorously protested Fernandes's activities to the Queen's ministers, after the alleged murder of seven Portuguese sailors, and in 1577 the 39-year-old Fernandes was arrested in Cardiff and taken to London to face trial. However, far from being hanged for his crimes, Fernandes was released, apparently with the connivance of Queen Elizabeth's spymaster Sir Francis Walsingham, who appears to have
Francis Walsingham who forwarded them to Walsingham. The letters indicated a conspiracy among the Catholic powers to invade England and displace Elizabeth with Mary, Queen of Scots. By April 1583, Walsingham had a spy, identified as Giordano Bruno by author John Bossy, deployed in the French embassy in London. Walsingham's contact reported that Francis Throckmorton, a nephew of Walsingham's old friend Nicholas Throckmorton, had visited the ambassador, Michel de Castelnau. In November 1583, after six months of surveillance, Walsingham had Throckmorton arrested and then tortured to secure a confession—an admission of guilt that clearly implicated Mendoza. The Throckmorton plot called for an