Lady Diana Spencer then Camilla Parker-Bowles.
Lady Diana
Charles Philip Arthur George.
Prince Charles Philip Arthur George
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Charles Philip Arthur George.
Charles Philip Arthur George : Prince of Wales .
His Royal Highness Prince Charles Philip Arthur George
Charles the First was born as Charles Philip Arthur George Mountbatten-Windsor. Some of the titles he had are: His Royal Highness The Duke of Rothesay, His Royal Highness The Prince of Wales, and His Royal Highness The Duke of Cornwall.
His Royal Highness Prince Charles Philip Arthur George
Charles Philip Arthur George born 14th November, 1948
He can choose any of his given names. Thus he could be Charles III, Philip I, Arthur I, or George VII. It is conventional wisdom that he will choose George VII, in honor of his grandfather.
We cannot know this until he succeeds - he has 4 names (Charles Philip Arthur George) and may choose to be known as any one of them (Charles III, Philip, Arthur or George VII) I sincerely hope that he does not choose Charles III, Charles Edward Louis John Philip Casimir Sylvester Maria Stuart is the true Charles III. At the death of his father King James III and VIII, January 1, 1766, Charles succeeded to all of his British rights. He was henceforward recognised by the Jacobites as "King Charles III"
His Royal Highness The Prince Charles, Prince of Wales was christened Charles Philip Arthur George. The related link explains in detail his name and many titles.