Ambrose Rookwood the House of Lords, Guy Fawkes, was discovered there and arrested. Rookwood fled the city, and informed Catesby and the others of the plan's failure. Together the remaining conspirators rode to Holbeche House in Staffordshire, where on 8 November they were attacked by the pursuing Sheriff of Worcester and his men. Catesby was killed, but Rookwood survived, and was imprisoned in the Tower of London. Rookwood and the survivors were arraigned on 27 January 1606 in Westminster Hall. Pleading not guilty, he claimed to have loved Catesby "above any worldly man". His subsequent request for mercy was ignored, however, and
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