Maybe this was already discussed in older threads, but I couldn't find them. IOTL the inheritance of Louis I of Hungary and Poland was divided between his two daughters, Mary (who got Hungary) and Hedwig (who got Poland), not without a lot of political intrigue and conflict with other claimants. However, Louis had an older daughter, Catherine, that died as a child (when her younger sisters were already born). At the time of her death she was betrothed to Louis, Duke of Orleans, a son of Charles V of France. So, WI she had lived to adulthood as her sisters? How would it affect the division of the inheritance of Louis I? And, if Louis of Orleans is far away in Hungary or Poland, how could it change the political environment in France at the time?