Gwilym ap Tudur Rhys and Owain Glyndŵr. As a result, the Tudur brothers began planning an attack on Conway Castle. On Good Friday, 1 April 1401, the brothers and 44 men (which included those who had also been excluded from the pardons) infiltrated the castle. They had pretended to be carpenters, and captured the castle while the guard were in church. Negotiations began for the return of the castle on 13 April, with the king represented by Henry "Hotspur" Percy and Gwilym representing the Welsh forces. After seeking a compromise, which would have resulted in pardons being given to the Welshmen, the king
Ewloe Castle North Wales. Eventually by the late 1250s, the Welsh had reached Ewloe retaking lands up to the England–Wales border. A fortification had existed on or near the site since the Battle of Ewloe () in 1157, when the Welsh successfully ambushed an English force under the command of Henry II (as they marched to Twthill at Rhuddlan). The English king only narrowly avoiding being killed himself having been rescued by Roger, Earl of Hertford. In 1257 Llywelyn ap Gruffudd had work begin on the castle. The fortification incorporated previous work undertaken by both Owain Gwynedd and Llywelyn the Great. It