William of Normandy, known as 'the Conqueror', was born at Falaise in 1027, a natural son of Robert, Duke of Normandy and a girl called ... and for the building of many castles, notably the Tower of ...

Sally: Here we are, William the Conqueror - born in 1028, around a thousand years ago. Harry: I like his crown. Sally: And that's one of his castles ... he became the Duke of Normandy.