oooh how fun:
1279 - the birth of Louis I, Duke of Bourbon
Louis was son of Robert, Count of Clermont and thus grandson of King Louis IX of France, who never saw him, the son of his youngest son. Louis' mother was Beatrix of Burgundy, heiress of Bourbon and a granddaughter of Hugh IV, Duke of Burgundy.
He fought on the losing side in both the Battle of the Golden Spurs (1302) and the Battle of Mons-en-Pévèle (1304), but escaped unharmed. In 1310, he was made Grand Chambrier of France. In 1327, Charles IV of France persuaded him to exchange the County of Clermont for that of La Marche, and elevated Bourbon to a duchy-peerage. However, Clermont was restored to him by Philip VI of France in 1331.