Quem se casou com Eugenio, Count of Villafranca?

Eugenio of Savoy (Eugenio Ilarione; 21 October 1753 – 30 June 1785) was a prince of the House of Savoy and founder of the Villafranca branch of the royal family of Italy that survived until 1888. He was a brother of Queen Marie Antoinette's tragic confidante, the Princesse de Lamballe.