Percy's name, which Fawkes gave, aroused fresh suspicions and they retired to inform the king.
Moreover, in May 1605 he gave introductions to Guy Fawkes when he went to Flanders, and to Sir Edmund Baynham when he went to Rome (see Gunpowder Plot).
His name immediately aroused suspicions, and accordingly it was ordered that a further search should be made by Thomas Knyvett, a Westminster magistrate who, coming with his men at night, discovered the gunpowder and arrested Fawkes on the threshold.
At about ten o' clock Robert Keyes brought Fawkes from Percy a watch, that he might know how the anxious hours were passing, and very shortly afterwards he was arrested, and the gunpowder discovered, by Thomas Knyvett, a Westminster magistrate.
On the arrest of Fawkes the other conspirators, except Tresham, fled in parties by different ways, rejoining each other in Warwickshire, as had been agreed in case the plot had been successful.
Guy Fawkes himself was to take ship immediately for Flanders, spread the news on the continent and get supporters.
When all was ready in May 1605 Fawkes was despatched to Flanders to acquaint Sir William Stanley, the betrayer of Deventer, and the intriguer Owen with the plot.
Fawkes's stepfather was connected with many Roman Catholic families, and was probably a Roman Catholic himself, and Fawkes himself became a zealous adherent of the old faith.
He planned to gather the Lollards of London and the Home Counties under arms, and to seize the person of the kinga scheme as wild as the design of Guy Fawkes or the Fifth Monarchy Rising Men in later generations, for the sectaries were not u0,der1 strong enough to coerce the whole nation.
Catesby, however, after some hesitation, finding from Fawkes that nothing had been touched in the cellar, and prevailed upon by Percy, determined to stand firm, hoping that the government had put no credence in Monteagle's letter, and Fawkes returned to the cellar to keep guard as before.