The Blessed Amadeus IX (February 1, 1435, Thonon-les-Bains – March 30, 1472), surnamed the Happy was the Duke of Savoy from 1465 to 1472. He was the son of Louis, Duke of Savoy and Anne de Lusignan, daughter of Janus of Cyprus, King of Cyprus. In 1452, he married Yolande of Valois (1434–1478), sister of Louis XI of France and daughter of Charles VII of France. Because of his epilepsy and retirement, she was left in control of the state. Amadeus IX was known for his charity and concern for the poor and was beatified in 1677. The Catholic Church venerates him with a liturgical feast on March 30.