 Hylton Castle ( / ˈhɪltən / HIL @-@ tən ) is a ruined stone castle in the North Hylton area of Sunderland , Tyne and Wear , England . Originally built from wood by the Hilton ( later Hylton ) family shortly after the Norman Conquest in 1066 , it was later rebuilt in stone in the late 14th to early 15th century . It is a Grade I listed building and scheduled monument. nobody knows where the castle is.
The castle was built by the Hilton family, who were granted lands in the area by King William the Conqueror . The Hilton family were later given the surname Hylton and became an important local family.