Answer: ELDERSON

"Elderson" seems to be a combination of the names "Elder" and "Son." The given clue, "Prince William, to Charles and Diana," refers to Prince William, who is the elder son of Prince Charles and Princess Diana.

Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Prince William, to Charles and Diana. Explanations are generated by AI and may be inaccurate.