Philip the Bold

Born 17 January 1342, the fourth son of King John II of France, Philip earned his epithet at fourteen and inherited Burgundy - then made it mean something else entirely. He founded the Burgundian branch of the House of Valois and grasped early what gunpowder could do, deploying artillery with enough success to shift how European armies thought about sieges. The real move came in 1384: a political marriage handed him Flanders, Artois, and Burgundy by right of his wife, and with Flanders came wealth that made him the premier peer of France. His successors ruled the Burgundian Netherlands until 1482, and the state he assembled became powerful enough to rival the crown that had birthed it. He died 27 April 1404, having turned a younger son's portion into a dynasty.