He was born in Turin to Victor Amadeus I, Duke of Savoy, and Christine of France. His maternal grandparents were Henry IV of France and his second wife Marie de' Medici. In 1638 at the death of his older brother Francis Hyacinth, Duke of Savoy, Charles Emmanuel succeeded to the duchy of Savoy at the age of 4. His mother governed in his place, and even after reaching adulthood in 1648, he invited her to continue to rule. Charles Emmanuel continued a life of pleasure, far away from the affairs of state.