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The original château was constructed in the 17th century by Marie de Bourbon, Countess of Soissons and Princess of Carignano after her marriage to Prince Thomas Francis of Savoy.
The county of Soissons was passed onto his only surviving sister Marie de Bourbon, Princess of Carignano and wife of Thomas Francis of Savoy, a famous general.
The late prince's brothers Thomas and Maurice had fears that they would be excluded from their rights to the succession, reinforced when, soon after the death of Victor Amadeus, Christine was forced by the French to write to the brothers insisting that they not return to Piedmont - though since Thomas was serving Spain at the time, the French demand was not entirely unreasonable.
On 4 June 1627 he became the abbot of the monastery at Abondance and in 1637, on the death of his elder brother Victor Amadeus I, he and his brother Thomas claimed the regency of the duchy against Victor Amadeus's widow Christine Marie of France, but the king supported Christine and confirmed her as regent.
Her husband was a descendant of the Princes of Carignano, which been raised by Charles Emmanuel I, Duke of Savoy into a principality as an appanage for his third son, Thomas Francis.
Thomas Francis, Jr. (1900–1969), American physician, virologist, and epidemiologist