Prince Philip, Duke of Edinburgh, who died in April 2021, would likely be livid over his surname, “Mountbatten-Windsor,” being ditched for Prince Archie and Princess Lilibet Diana. The late Queen Elizabeth II’s long-serving consort struggled for years to have his adopted last name of Mountbatten given to his male-line descendants before winning the argument in 1960. Prince Harry and Meghan Markle’s children bore this combo of Philip’s surname and hyphenated with the royal house of Windsor until the pair adopted “Sussex” recently. “How sad, therefore, that only three generations later, Harry sh…