 Owain Gwynedd (1100–70) of the Aberffraw line was the first Welsh ruler to use the title (prince of the Welsh), a title of substance given his victory on the Berwyn Mountains, according to John Davies.Within four years of the Battle of Hastings (1066), England had been completely subjugated by the Normans.William I of England established a series of lordships, allocated to his most powerful warriors along the Welsh border, the boundaries fixed only to the east (where they met other feudal properties inside England).