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
Tretower Court The west range was also 14th century. In the early 15th century during the Owain Glyndŵr revolt in Wales against the new King Henry IV the building was under a very real threat from Welsh forces. Tretower Castle was listed as a defensible stronghold for the King in 1404 and under Sir James Berkeley successfully held off an attack. Presumably this was directed at Tretower Castle and the Court escaped serious damage. The same year an English force led by Richard Beauchamp, Earl of Warwick fought a Welsh army of Owain Glyndŵr at the Battle of Mynydd Cwmdu nearby, almost