Hundred Years' War
The Hundred Years' War was a series of conflicts waged from 1337 to 1453 by the House of Plantagenet, rulers of the Kingdom of England, against the French House of Valois, over the right to rule the Kingdom of France. Each side drew many allies into the war. It was one of the most notable conflicts of the Middle Ages, in which five generations of kings from two rival dynasties fought for the throne of the largest kingdom in Western Europe. The war marked both the height of chivalry and its subsequent decline, and the development of strong national identities in both countries.
Capetian–Plantagenet rivalry
Ironically, Edward III, the son of Isabella and Edward II of England would use his position as grandson of Philip the Fair to claim the Kingdom of France. Therefore, the marriage settlement that sealed the end of the "first" Hundred Years' War would lead to the casus belli employed to declare the "second" Hundred Years' War. The War of Saint-Sardos, the first major conflict between the two major kingdoms in half a century, would act as foreshadowing for the bigger war to come.