Why are William and Harry referred to as Wales when their name is Windsor?
Members of the Royal Family who are titled His (of Her) Royal Highness do not traditionally need or use a surname. Windsor is the name of the Royal House to which they belong. Their titles are HRH Prince William of Wales and HRH Prince Henry of Wales. During their current tours of duty with the Armed Forces, the Princes have chosen to show their surname as Wales. Members of the royal family who are not HRH (for example Prince Edward’s children Louise and James) use the surname Mountbatten-Windsor.