Henry VI went to war with his uncle, Charles VII.

ECONOMIST: England's war with France: Once more unto the breach | The

In early December, the two DJs impersonated Queen Elizabeth and Prince Charles and called King Edward VII's Hospital to gain information about the condition of Catherine, Duchess of Cambridge.

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In 1492, the Treaty of Etaples was signed between Charles VIII of France and Henry VII of England.

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Australian DJs posing as the Queen and Prince Charles got details from a nurse at King Edward VII hospital in central London.

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Pope Clement VII's 1530 bull approving the coronation of the Holy Roman Emperor Charles V might seem an assertion of papal supremacy until one notes that it followed the 1527 sack of Rome by Charles's mutinous troops, many of them German Lutherans.

WSJ: Lux in Arcana | Capitoline Museum | The Papacy's Private Papers | By Francis X. Rocca