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
Owain Fychan and destroying the royal castle there, which was made of timber until fortified in stone in 1194) and Iorwerth Goch from Mochnant Is Rhaeadr in 1166. Owain Fychan now controlled Mechain, Cynllaith, Caereinion and Mochnant Is Rhaeadr. Carreghofa Castle was retaken by Henry II in 1165, but Owain Fychan had recaptured it again by 1187. The castle may have been important because of silver mining operations taking place there. He was attacked at night and killed at Carreghofa Castle by Gwenwynwyn and Cadwallon, the sons of Owain Cyfeiliog. They were unable to control the territories gained to the west of