Robert and Thomas Wintour rather than forthcoming". Thomas also met the Welsh spy Hugh Owen, and Sir William Stanley, who were both disparaging of Catesby's hopes of Spanish assistance. Owen did, however, introduce Thomas to Guy Fawkes, a committed Catholic who had served under Stanley as a soldier in the Southern Netherlands. Although at that time the plotters had no detailed plans, Thomas told Fawkes of their ambition to "do somewhat in England", should Spanish support be lacking. In late April therefore the two men returned together to Catesby's lodgings at Lambeth, and told him that despite positive noises from the Spanish, "the deeds
Robert and Thomas Wintour friends also would with good reason condemn us." He nevertheless agreed to join the conspiracy, and as Catesby had not entirely given up hope of foreign support—"because we will leave no peaceable and quiet way untried"—Thomas returned to the continent. In Flanders he met Juan Fernández de Velasco, 5th Duke of Frías and Constable of Castile, who was holding court there before his journey to England to conclude the Treaty of London. Thomas again stressed the plight of English Catholics, hoping to influence the forthcoming treaty negotiations due to take place at Somerset House in London. The Constable was "friendly