In March 1401, Rhys ap Tudur and his brother Gwilym, cousins of Owain Glyndŵr, undertook a surprise attack on Conwy Castle.
I marts 1401 udførte Rhys ap Tudur og hans bror Gwilym, der var Owain Glyndwrs fætre, et overraskelsesangreb på Conwy Castle.