Yolande_of_Valois--Christine_of_France

Yolande of Valois (23 September 1434 – 23 August 1478), also called Yolande of France, was Duchess of Savoy by marriage to Duke Amadeus IX of Savoy, and regent of Savoy during the minority of her son Philibert I of Savoy from 1472 until 1478.