Berkhamsted Castle. Antique print of Berkhamsted Castle a Norman motte-and-bailey castle in Berkhamsted, Hertfordshire. The castle was built to obtain control of a key route between London and the Midlands during the Norman conquest of England in the 11th century. Robert of Mortain, William the Conqueror’s half brother, was probably responsible for managing its construction, after which he became the castle’s owner. Antique copper-plate engraving of Berkhamsted Castle, Hertfordshire. Dated in the plate July 26; 1787. Size of engraved area approx 5x6ins.