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
Robert and Thomas Wintour Following the meeting in May Catesby enlisted the aid of several more Catholic men, including Robert Wintour. On the same day he was admitted to the plot, 25 March 1605, the conspirators also purchased the lease to the undercroft they had supposedly tunnelled near. It was into this room that 36 barrels of gunpowder were brought, but when in late August Thomas and Fawkes made an inspection of the gunpowder, they found that it had decayed (separated). Thus, more gunpowder was brought in. Shortly after this, Catesby recruited the last three conspirators, Sir Ambrose Rookwood, Sir Everard Digby and Francis