Treaty of Le Goulet

The Treaty of Le Goulet was signed by Kings John of England and Philip II of France in May 1200. It concerned bringing an end to the war over the Duchy of Normandy and finalising the new borders of what was left of the duchy. The treaty was a victory for Philip in asserting his legal claims to overlordship over John's French lands. A consequence of the treaty was the separation of the Channel Islands from Normandy.

The terms of the treaty signed at Le Goulet, an island in the middle of the Seine river near Vernon in Normandy, included clarifications of the feudal relationships binding the monarchs. Philip recognised John as King of England, heir to his brother Richard I, and thus formally abandoned his prior support for Arthur I, Duke of Brittany, the son of John's late brother, Geoffrey II of Brittany. John, meanwhile, formally recognised the new status of the lost Norman territories by acknowledging the Counts of Boulogne and Flanders as vassals of the kings of France, not those of England, and recognised Philip as the suzerain of the continental lands in the Angevin Empire. John also bound himself not to support any rebellions on the part of the counts of Boulogne and Flanders.

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