Caston is a village and civil parish in the English county of Norfolk. Caston's name is of Anglo-Saxon origin and derives from the Old English for "Catt's farmstead or settlement". In the Domesday Book, Caston is recorded as a settlement of 56 households in the hundred of Wayland. The village was divided between the estates of King William and William …Caston is a village and civil parish in the English county of Norfolk. Caston's name is of Anglo-Saxon origin and derives from the Old English for "Catt's farmstead or settlement". In the Domesday Book, Caston is recorded as a settlement of 56 households in the hundred of Wayland. The village was divided between the estates of King William and William de Warenne.