The first Welsh parliament was established by Owain Glyndwr (Owain Glendower) in 1404 in Machynlleth, a small town on the northwest coast of Wales, not far from Harlech Castle, which was his seat. “In 1404, Glyndwr assembled a parliament of four men from every commot in Wales at Machynlleth, drawing up mutual recognition treaties with France and Spain.”  http://freepages.history.rootsweb.ancestry.com/~bowen/owainglyndwr.html The Owain Glyndwr Centre exists now on the site of the building where this was established and Owain was crowned Prince of Wales.  http://www.canolfanglyndwr.org/ Background: “Glyndwr was a member of the dynasty of northern Powys and, on his mother’s side, descended from that of Deheubarth in the south. The family had fought for Llywelyn ap Gruffydd in the last war and regained their lands in north-east Wales only through a calculated association with the powerful Marcher lords of Chirk, Bromfield and Yale Read more…