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 Owain Owain () is a name of Welsh origin. variously written in Old Welsh as Ougein, Eugein, Euguen, Iguein, Ou(u)ein, Eug(u)ein, Yuein, and in Middle Welsh as Ewein, Owein, and Ywein. Other variants of the name Owain include Ewein, Iguein, Owein, Ouein, Ywen, Ywein, Ywain, Yuein, and Yvain. Owain has also been Latinized as "Oenus". Osborn Bergin proposed that the name is cognate with Old Irish "Ugaine", "Augaine", and suggested that the Irish name could be a British loan. Linguist Kenneth H. Jackson proposed that the name is a derivation of the Latin "Eugenius", (which was more recently accepted by