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
Grosmont, Monmouthshire Syfyrddin (or Edmunds Tump, possibly after Edmund Crouchback, 1st Earl of Lancaster). Grosmont is linked to the Welsh Prince Owain Glyndŵr and during the Glyndwr rebellion it was the site of a battle in 1405. Glyndwr's ally and trusted Captain Rhys Gethin raised a force of maybe 8,000 men that marched on Grosmont burning the town to the ground. At this time Grosmont was a large and important settlement - only Abergavenny and Carmarthen were larger in the whole of South Wales. Prince Henry, later to become King Henry V, dispatched a force comprising men led by John Talbot, 1st