Princess Louise Maximiliane Caroline Emanuel of Stolberg-Gedern was the wife of Charles Edward Stuart, the Jacobite claimant to the English and Scottish thrones. The unhappy marriage led her to request from the pope a decree of separation, which she was granted. During her years in Paris and Florence, she established famous salons where important artists and intellectuals of the day were invited to gather. She is commonly called the Countess of Albany.

Maria Theresa of Austria-Este was Queen of Sardinia as the wife of Victor Emmanuel I of Sardinia. She was born an archduchess of Austria-Este and a princess of Modena as the daughter of Ferdinand Karl, Archduke of Austria-Este, and Maria Beatrice d'Este, Duchess of Massa. Her husband’s reign as King of Sardinia ended in abdication in 1821, when he elected his brother Charles Felix king after a liberal revolution, during which Victor Emmanuel proved unwilling to accept a liberal constitution. She was a part of the then newly-founded House of Austria-Este.