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 fugitives reached Catesby's family home of Ashby St Ledgers at about 6:00 pm. Not wanting to implicate his mother, Catesby sent a message to Robert, who had just recently arrived there, asking to meet just outside the town. There he told him that Fawkes had been captured. At Dunchurch they collected Everard Digby and his 'hunting party', which included Robert and Thomas's half-brother, John Wintour. He had been invited to join them on 4 November. The next day the group raided Warwick Castle for supplies, something that Robert strongly objected to as it would create "a great uproar" in the