own hands, but was asked by Catesby to restrain himself, and told "I am thinking of a most sure way and I will soon let thee know what it is." Thus Percy found himself at the Duck and Drake inn near the Strand in London, along with Catesby and his cousin Thomas Wintour, John Wright and Guy Fawkes. His first words at the meeting were "Shall we always, gentlemen, talk and never do anything?" All five later swore an oath of secrecy on a prayer book, and then celebrated Mass in another room with Father Gerard, who was ignorant of their pact. While the plotters did not then have a detailed plan, Percy's appointment on 9 June as a Gentleman Pensioner gave him a reason to establish a London base. Through Northumberland's agents, Dudley Carleton and John Hippesley, he subleased a house in Westminster from Henry Ferrers, a tenant of John Whynniard, and installed Fawkes there as his servant, "John Johnson". On 25 March 1605 Percy also obtained the lease for the undercroft directly underneath the first-floor House of Lords. It was into this room that the plotters moved 36 barrels of gunpowder from Catesby's lodgings on the opposite side of the River Thames. The plan was that during the State Opening of Parliament, at which the king and his ministers would be present, the plotters would blow up the House of Lords, killing all those within it. James's daughter, Princess Elizabeth, would be captured during a Midlands uprising, and installed as a titular queen. Percy spent that Autumn collecting Northumberland's rents, while Catesby continued to enlist support. By October 1605, he had 12 Catholic men assigned to his cause and was at work on the remaining details. Several conspirators expressed disquiet over the safety of fellow Catholics who might be caught in the planned explosion. Percy's concern was for his patron, Northumberland, who it seems might have been made Lord Protector if the plot had succeeded. Lord Monteagle's name was also mentioned, by a worried Francis Tresham. The fate of Elizabeth's brother, Prince Henry, was uncertain; although the plotters presumed that he would die with his father, they decided that if he did not attend Parliament, Percy should kidnap him. Monteagle letter On Saturday 26 October, at his house in Hoxton, Monteagle received an anonymous letter that warned him to stay away from Parliament. Uncertain of its meaning, he