It was built on the site of the court (llys) of Ednyfed Fychan, the seneschal (chief minister) of Prince Llywelyn ap Iorwerth.
Fe'i hadeiladwyd ar safle llys brenhinol Ednyfed Fychan, distain (prif gynghorwr) y Tywysog Llywelyn ap Iorwerth.