Historians believe Owain Goch was held here because the 13th century poet Hywel Foel ap Griffi described Owain as ‘a man in a tower, long a guest’.
Cred haneswyr fod Owain Goch wedi cael ei gadw yma oherwydd bod Hywel Foel ap Griffi wedi disgrifio Owain fel 'Gŵr ysydd yn nhŵr yn hir westai'.