Gunpowder Plot under King James had faded, leaving many English Catholics disappointed. His fellow plotters were John and Christopher Wright, Robert and Thomas Wintour, Thomas Percy, Guy Fawkes, Robert Keyes, Thomas Bates, John Grant, Ambrose Rookwood, Sir Everard Digby and Francis Tresham. Fawkes, who had 10 years of military experience fighting in the Spanish Netherlands in the failed suppression of the Dutch Revolt, was given charge of the explosives. The plot was revealed to the authorities in an anonymous letter sent to William Parker, 4th Baron Monteagle, on 26 October 1605. During a search of the House of Lords at about midnight
Ambrose Rookwood Although unverifiable, his wife's relationship to Robert Keyes may mean that Rookwood already suspected that something was being planned. He was at first concerned for the welfare of the Catholic lords who would be present at the explosion, but his compunction was alleviated when Catesby promised him that they would be tricked out of attending Parliament that day. Any lingering doubts Rookwood had were removed by Catesby's lie that the Jesuits had given the scheme their approval. Rookwood had stayed with the Wintours at Huddington Court, and that month with the Catholic Lacons at Kinlet Hall, but at Cateby's behest