Prince Louis Julius of Savoy (1660-1683) (1660–1683) Parents Eugene Maurice, Count of Soissons Olympia Mancini Children Siblings Eugene of Savoy Marie-Jeanne of Savoy Louis Thomas, Count of Soissons Philippe de Savoie-Carignan Emanuele di Savoia-Carignano, Comte de Dreux Ludovica di Savoia-Carignano Francesca di Savoia-Carignano