similarly displayed at Wrexham, Ruthin Castle, and Holt Castle. On October 25, 1970, Pope Paul VI presided over the canonization ceremony in Rome for St. Richard Gwyn, as one of the Forty Martyrs of England and Wales. The Catholic Church in England commemorates Gwyn with a feast day together with all the 284 canonized and beatified martyrs of the English Reformation on 4 May. The Catholic Church in Wales commemorates him on the feast day of the Six Welsh Martyrs: priests Philip Evans and John Lloyd, John Jones, David Lewis, John Roberts, the layman Richard Gwyn, and their companions, every year on October 25. During his rule, Dudley also built a large Anglican parish church in the walled town, possibly intending it to become a cathedral and carried out some minor repairs to the castle but little other work was completed before his death in 1588. 17th century When the First English Civil War broke out in August 1642, North Wales was solidly Royalist, and Denbigh Castle was held by a garrison of 500 under Colonel William Salesbury, who made repairs to the defences. By late 1645, the war had turned against the Royalists, and Charles I spent three days at the castle after his defeat at Rowton Heath in September. The following month, a Royalist army under the command of Sir William Vaughan gathered at Denbigh Green, close to the ruins of Denbigh Friary, intending to march to Chester to relieve the forces under siege there. Before this, Vaughan was attacked and defeated by a force commanded by Sir Thomas Mytton, and some of the Royalist soldiers retreated into the castle in the aftermath. Mytton took the outer parts of Denbigh but could not break into the walled town or the castle. Mytton returned the next year with additional equipment and placed the castle and the walled town under a close siege in April 1646, erecting earthwork bastions for his guns along the eastern site of Denbigh. The Goblin Tower along the town walls, which contained the garrison's main well, was bombarded with artillery and Mytton placed more guns on nearby Galch Hill to attack the south-western side of the walls. With only one artillery piece of his own and no Royalist reinforcements likely, Salesbury's position appeared hopeless but he held on, arguing that he had given assurances to the King that he would not surrender the castle. Finally,