Charles VI of France

Charles VI, called the Beloved and later the Mad, was King of France from 1380 until his death. He is known for his mental illness and psychotic episodes which plagued him throughout his life. Charles's reign would see his army crushed at the Battle of Agincourt, leading to the signing of the Treaty of Troyes, which made his future son-in-law Henry V of England his regent and heir to the throne of France. However, Henry would die shortly before Charles, which gave the House of Valois the chance to continue the fight against the English, leading to their eventual victory and the end of the Hundred Years' War in 1453.