Treaty of Montreuil (1299)

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The 1299 Treaty of Montreuil () or Montreuil-sur-Mer () was part of the negotiations between King EdwardI of England and PhilipIV of France during the 1294–1303 Gascon War. It provided for the betrothal of Edward's son Prince Edward of Caernarfon and Philip's daughter Isabella ("the She-Wolf of France"). It was drafted at Montreuil on 19 June 1299 and ratified by EdwardI on 4 July and PhilipIV on the Feast of the Invention of StStephen (3 August).
The treaty was negotiated on EdwardI's behalf by Henry de Lacy, the earl of Lincoln; Guy de Beauchamp, the earl of Warwick; and AmadeusV, count of Savoy. Under its terms, should Edward I default on the treaties, he would forfeit Gascony; if Philip defaulted, he would pay a fine of £100,000. It was said by contemporaries that the alliance brought "great unhappiness to both parties". EdwardI also privately instructed the count to enquire about Philip's half-sister Margaret of France, whom Edward married at Canterbury soon afterwards on 10 September.
Upon France's ratification of the original treaty, it was supplemented by the Treaty of Chartres on the same day. The final betrothal of Prince Edward, by then Prince of Wales, and Isabella formed part of the 1303 Treaty of Paris that finally concluded the war. Following the prince's accession as EdwardII in 1307, the two married at Boulogne-sur-Mer on 25 January 1308, when Isabella was 12.
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Category:Treaties of medieval England
Category:House of Plantagenet
Category:Treaties of the Kingdom of France
Montreuil
Category:1299 in England
Category:1290s in France
Category:England–France relations