relied much on his sword and personal courage." According to both men, Percy's conversion to Catholicism was a calming influence, but biographer Mark Nicholls, who calls Percy "a pugnacious character", says that this was only true to a point. His excesses did not prevent him from joining Northumberland during his command in the Low Countries, held from 1600–1601, for which he was rewarded with £200. The earl also appointed Percy his receiver of rents in Cumberland and Northumberland, in 1603. Henry Percy was considered a supporter of the Catholic cause, and on several occasions before 1603, suspecting that Queen Elizabeth I did not have long to live, he entrusted Thomas with the delivery of secret correspondence to and from her probable successor, King James VI of Scotland. Northumberland's uncle had been executed for his involvement in the Rising of the North, a plot to replace Elizabeth with James's mother, Mary, Queen of Scots. He planned to make up for his family's disgrace by building a strong relationship with James, but also wished to counter the influence of Robert Cecil, 1st Earl of Salisbury, whose father Lord Burghley (it was rumoured) James believed had been responsible for Mary's death. Exactly what assurances James gave Percy are unknown. Tesimond wrote that he made "very generous promises to favour Catholics actively", and "he would admit them to every kind of honour and office", but the consensus among historians is that what promises James did make were oral, rather than written. Fraser posits that the Scottish king probably intended to allow Catholics to worship privately, which if true was a much more reserved view than that subsequently announced by Percy, who told his fellow Catholics that the king had promised to protect their religion. Considering the "quaintness" of James's spoken English there may have been some misunderstanding on both sides. In his surviving correspondence with Northumberland, the king writes only that neither would "quiet" Catholics be disturbed, nor would those that deserved recognition "through their good service" be overlooked. This mixing of signals was to have lasting consequences. Plot Percy became the fifth member of the Gunpowder plot on Sunday 20 May 1604. Almost a year earlier, he had called at Robert Catesby's home at Ashby St Ledgers, and complained bitterly about James, who since succeeding Elizabeth had done little to fulfil his expectations. He had threatened to kill the new king with his