Victor Amadeus III of Sardinia
Through his mother, he was a first cousin of King Victor Amadeus III of Sardinia and of Marie Thérèse of Savoy, Princess de Lamballe. His paternal cousins included Louise Henriette de Bourbon, Duchess of Orléans (mother of Philippe Égalité), the sister of Louis François de Bourbon, Prince of Conti, head of another cadet branch of the royal dynasty. Viktoria of Hesse-Rotenburg, the Princess of Soubise, was another first cousin.