Hundred Years' War (1415–53)
The Lancastrian War was the third and final phase of the Anglo-French Hundred Years' War. It lasted from 1415, when King Henry V of England invaded Normandy, to 1453, when the English lost Bordeaux. It followed a long period of peace from the end of the Caroline War in 1389. The phase was named after the House of Lancaster, the ruling house of the Kingdom of England, to which Henry V belonged.
Hundred Years' War
After the death of Joan of Arc, the fortunes of war turned dramatically against the English. Most of Henry's royal advisers were against making peace. Among the factions, the Duke of Bedford wanted to defend Normandy, the Duke of Gloucester was committed to just Calais, whereas Cardinal Beaufort was inclined to peace. Negotiations stalled. It seems that at the congress of Arras, in the summer of 1435, where the duke of Beaufort was mediator, the English were unrealistic in their demands. A few days after the congress ended in September, Philip III, duke of Burgundy, deserted to Charles VII, signing the Treaty of Arras that returned Paris to the King of France. This was a major blow to English sovereignty in France. The Duke of Bedford died on 14 September 1435 and was later replaced by Richard Plantagenet, 3rd Duke of York.