Prince Edwardis the youngestson of Queen Elizabethand Prince Philip (viaTown & Country).
But why is Edward not a duke currently?
That said, Edward could become a duke if he inherits his father’s title.

In fact, this wasPhilip’s wish for his youngest son, according toWales Online.
New reports indicate, however, it may not happen.
AsWales Onlineexplains, once he becomes King of England, he would forfeit it.

It will not go to Edward," a source confirmed to The Sunday Times.