Louis de Bourbon, Comte de Soissons was the son of Charles de Bourbon, Count of Soissons and his wife, Anne de Montafié, Countess of Clermont-en-Beauvaisis. A second cousin of Louis XIII of France he was a prince du Sang, those considered part of the royal family. Part of the faction who opposed Cardinal Richelieu and his policy of war with Spain, he was killed leading a revolt at the Battle of La Marfée in 1641.

The Princess of Carignano was a woman married to the Prince of Carignano of the House of Savoy. The list ends with Charles Albert, in 1831, after he became King of Sardinia. But the Queens of Sardinia and later Italy used the title "Princess of Carignano" as part of their full title which included a lot of other titles.