Treaty of Ardennes Forest

Timeline

1. 1297–1298Flanders border · FlandersPope Boniface VIII sent envoys to mediate the Anglo-French war. In October 1297 the two sides reached a truce in Flanders, and Edward I's expeditionary force withdrew in March 1298; in January 1298 negotiations continued at Tournai. Previously English and French armies had faced off along the Ardennes-Flanders border, and the military stalemate created conditions for a formal treaty.
2. 1299Montreuil · Pas-de-CalaisOn June 19, 1299, witnessed by papal legate Raoul de Vicence, Anglo-French representatives initialled a treaty at Montreuil: Edward I's son Edward (later Edward II) was betrothed to Philip IV's daughter Isabella; both sides renounced foreign alliances, England abandoned direct aid to Count Guy of Flanders, and France promised to restore Aquitaine (Gascony) to England, with violators facing heavy fines or loss of territory.
3. 1299Canterbury · KentEdward I ratified the treaty on July 4, 1299, and Philip IV on August 3, signing a supplementary treaty at Chartres the same day. On September 10 that year Edward I married Philip IV's half-sister Margaret at Canterbury; the marriage temporarily eased tensions, but Edward thereafter largely abandoned his Flemish ally, leaving Count Guy of Flanders isolated, and the war was only finally settled by the Treaty of Paris in 1303.