This location was so important that Llywelyn was prepared to take it from his own son Gruffudd in 1221, so that he could begin building a castle.
Roedd y lleoliad hwn mor bwysig nes yr oedd Llywelyn yn barod i gymryd y safle oddi ar ei fab ei hun, Gruffudd, yn 1221 er mwyn adeiladu’r castell.