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 Lawgoch identity and raised up new Welsh military leaders such as Owain claiming descent from the ancient Princes of Wales. In May 1372 in Paris, Owain announced that he intended to claim the throne of Wales. He set sail from Harfleur with money borrowed from Charles V. Owain first attacked the island of Guernsey, and was still there when a message arrived from Charles ordering him to abandon the expedition in order to go to Castile to seek ships to attack La Rochelle. Owain defeated an English and Gascon force at Soubise later that year, capturing Sir Thomas Percy and Jean