5. Prince Harry
As far as wealth goes, William is pretty much neck-and-neck with his older brother with about $40/£30 million. A significant portion of that wealth came from the $16/£12 million he inherited from his mother, Princess Diana, at the time of her death in 1997. Other sources of income include money he was given by his grandmother, Queen Elizabeth, in addition to what he receives from his father in return for carrying out his royal duties.