Owain Glyndŵr were leaving their studies to join Owain, and Welsh labourers and craftsmen were abandoning their employers in England and returning to Wales. Owain could also draw on Welsh troops seasoned by the English campaigns in France and Scotland. Hundreds of Welsh archers and experienced men-at-arms left English service to join the rebellion. In 1404, Owain held court at Harlech and appointed Gruffydd Young as his Chancellor. Soon afterwards, he called his first Parliament (or or "gathering") of all Wales at Machynlleth, where he was crowned Prince of Wales and announced his national programme. He declared his vision of an independent
Owain Glyndŵr Owain. Henry IV appointed Henry Percy – the famous "Hotspur" – to bring the country to order. Hotspur issued an amnesty in March which applied to all rebels with the exception of Owain and his cousins, Rhys ap Tudur and Gwilym ap Tudur, sons of Tudur ap Gronw (forefather of King Henry VII of England). Both the Tudurs were pardoned after their capture of Edward I’s great castle at Conwy. In June, Owain scored his first major victory in the field at Mynydd Hyddgen on Pumlumon. Retaliation by Henry IV on the Strata Florida Abbey followed, but eventually led to