It is believed that the first fortifications on the site were erected by the Normans in the late 11th century, A motte and bailey construction designed to assert control over the newly conquered territory.

据信， 该遗址上的第一批防御工事是由诺曼人在 11 世纪后期建造的，这是一座土丘和城墙建筑， 旨在控制新征服的领土。