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
Ambrose Rookwood it was "a potentially dangerous statement of faith". Ambrose and two of his brothers, Robert and Christopher, were educated by Jesuits at Saint-Omer, then in Flanders. Both brothers became priests (Ambrose's elder brother, Henry, became a Franciscan), and his half-sisters Dorothea and Susanna became nuns. According to the Jesuit Oswald Tesimond, Rookwood was "well-built and handsome, if somewhat short", which he compensated for by his taste in extravagant clothing. In author Antonia Fraser's opinion, this affectation was somewhat inappropriate at a time when "clothes were supposed to denote rank rather than money". In or shortly before 1599 he married Elizabeth,