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
Dyfnwal ab Owain by another son of Dyfnwal named Owain, who is recorded to have died in 1015. The later Owain Foel, King of Strathclyde, who is attested in 1018, may well be a grandson of Dyfnwal. Dyfnwal is likely the eponym of Dunmail Raise in England, and possibly Cardonald, Dundonald/Dundonald Castle in Scotland. For hundreds of years until the late ninth century, the power centre of the Kingdom of Al Clud was the fortress of Al Clud ("Rock of the Clyde"). In 870, this British stronghold was seized by Irish-based Scandinavians, after which the centre of the realm seems to have relocated