Prince William’s great-great uncle, who became Edward VIII, was known as David by friends, one of his given names.
However, many royal experts are in agreement William will keep his name and become King William V when he takes the throne.
If this is the case, William’s official title will likely be: “William V, by the Grace of God, of the United Kingdom of Great Britain and Northern Ireland and of His other Realms and Territories King, Head of the Commonwealth, Defender of the Faith’, with the style of ‘Majesty.’”
But while the Duke of Cambridge could stick to his first name, there are speculations his father will opt for a different name.