In 1360, the Treaty of Brétigny surrendered the city and its county to England becoming part of the Pale of Calais.
Philip the Good, Duke of Burgundy, laid siege to Guînes in 1436 with a force of Flemish militia.
[2] The castle was placed under siege by a French army in 1558, led by Francis, Duke of Guise.
[3] The French gave honourable terms of surrender and English rule of the area came to an end.
The castle was badly slighted by the Duke of Guise, but it was known to be used to house the local commander.