Amadeus IX, Duke of Savoy was born on February 1, 1435, and became the Duke of Savoy in 1465. He was known for his efforts to promote peace and stability in his region during a time of political turmoil. His reign was marked by attempts to strengthen the duchy and improve relations with neighboring territories. Amadeus IX was also a patron of the arts and supported various cultural initiatives. He was married to Philippa of Savoy, and they had several children, including Duke Charles I of Savoy. He passed away on March 30, 1472, leaving a legacy of diplomacy and cultural advancement.