Henri Coiffier de Ruzé, Marquis de Cinq-Mars – 12 September was a favourite of King Louis XIII of France who led the last and most nearly successful of the many conspiracies against the king's powerful first minister, the Cardinal Richelieu.
Detail of a presentation miniature with Christine de Pisan presenting her book to queen Isabeau of Bavaria. Illuminated miniature from The Book of the Queen (various works by Christine de Pizan),BL Harley
Catherine de Medici and her children: Charles IX, Henry III, Francis the duke dAlenon, and Margaret queen of Navarre. Once in the collection of Horace Walpole at Strawberry Hill, it is now in the Victoria and Albert.
Napoleon had many mistresses. Marie Walewska was one of them. Her brother convinced her to begin an affair with Napoleon for political reasons, even though she was already married. She bore him a son, Alexandre Joseph.
King Philip III of Spain, the son of Anna of Austria and her uncle, Philip II king of Spain. Anna herself was the product of first cousins, and Charles' maternal side was rife with intermarriage. Did I mention he married HIS first cousin?
von der Pfalz, Elisabeth Charlotte of the Palatinate,oil on canvas,Reiss-Engelhorn-Museen. Elisabeth Charlotte of the Palatinate May know as the Princess Palatine was the wife of Philippe of France,Duke of Orléans and was a sister-in-law of Louis XIV.