It is thought that he may have been a monarch himself, with Urien ruling northern Rheged, and Llywarch ruling the south. In his 1953 book The Derbyshire Dales, Norman Price links Llywarch to Carl Wark near Sheffield.
It is believed that he could have been a monarch, with Urien controlling northern Rheged and Llywarch overseeing the south. In his 1953 work "The Derbyshire Dales," Norman Price associates Llywarch with Carl Wark near Sheffield.