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
Vale Castle, Guernsey where they put its defenders to death. The occupying forces withdrew in 1340 after the Battle of Sluys crippled the French navy. In 1372 Owain Lawgoch, a claimant to the Welsh throne, led a free company on behalf of France in an attack on Guernsey. The assault was popularly called “La Descente des Aragousais”. Owain Lawgoch withdrew after killing 400 of the island militia, The poem of the same name refers to the castle as the "Château de l'Archange", the location of the last ditch stand against the insurgents. Granite curtain walls and a gatehouse were added in the 15th