Robert and Thomas Wintour the continent and again failed to elicit Spanish support, but instead met Guy Fawkes, with whom he returned to England. Robert, a devout Catholic who inherited Huddington Court near Worcester, joined the conspiracy the following year. The plot began to unravel following the delivery of an anonymous letter to William Parker, 4th Baron Monteagle, warning him to stay away from Parliament. Thomas and Catesby confronted Monteagle's brother-in-law, the recently recruited Francis Tresham, threatening to kill him, but Tresham managed to convince them of his innocence. At that stage Thomas reportedly asked Catesby to abandon the scheme, to no avail. When
Gunpowder Plot he and Wintour discovered that the gunpowder stored in the undercroft had decayed. More gunpowder was brought into the room, along with firewood to conceal it. The final three conspirators were recruited in late 1605. At Michaelmas, Catesby persuaded the staunchly Catholic Ambrose Rookwood to rent Clopton House near Stratford-upon-Avon. Rookwood was a young man with recusant connections, whose stable of horses at Coldham Hall in Stanningfield, Suffolk was an important factor in his enlistment. His parents, Robert Rookwood and Dorothea Drury, were wealthy landowners, and had educated their son at a Jesuit school near Calais. Everard Digby was a