Treaty of Montmirail (1169)

Timeline

1. 1177–1179Flanders border · FlandersEngland and France took up arms over the disposition of the Young King Henry's fiefs and border disputes such as the Vexin; Louis VII supported Becket's exile and Breton factions, while Henry II sought to expand his influence on the continent.
2. 1179Montmirail · SartheLouis VII, Henry II and the Young King Henry held a grand meeting at Montmirail, where they formally concluded a treaty: confirming the Young King Henry's rule over Normandy, Anjou, Maine and Brittany, exchanging hostages, and settling the betrothal of Prince Philip and Princess Alice.
3. 1179–1180Northwestern France · FranceThe treaty temporarily halted Anglo-French military confrontation in the direction of Flanders, consolidated the Young King Henry's continental fiefs, and foreshadowed Philip Augustus's later contest with England — though the betrothal and territorial promises were repeatedly violated thereafter.