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.
Abbey of Saint-Vigor de Cerisy
In 1337, the dynastic rivalries between the Valois and the kings of England precipitated the country into the Hundred Years War, which plunged the country into misery, aggravated by epidemics of plague. The abbey was fortified and a garrison settled there. In 1418, Richard de Silly, knight and captain of the abbey, was obliged to cede the abbey to the King of England. However, after the victory of the constable de Richemont over the English at Formigny in 1450, Normandy returned definitively to the kingdom of France.