Treaty of Troyes

The Treaty of Troyes was an agreement that King Henry V of England and his heirs would inherit the throne of France upon the death of King Charles VI of France. It was signed in the French city of Troyes on 21 May 1420 in the aftermath of Henry's successful military campaign in France. It forms a part of the backdrop of the latter phase of the Hundred Years' War finally won by the French at the Battle of Castillon in 1453, and in which various English kings tried to establish their claims to the French throne.

The treaty arranged for the marriage of Charles VI's daughter Catherine of Valois to Henry V, who was made regent of France and acknowledged (along with his future sons) as successor to the French throne. The Dauphin Charles VII of France was disinherited from the succession. The Estates-General of France ratified the agreement later that year after Henry V entered Paris.

The French king Charles VI suffered bouts of insanity through much of his reign. Henry V had invaded France in 1415 and delivered a crushing defeat to the French at Agincourt. In 1418, John the Fearless, Duke of Burgundy, whose political and economic interests favoured an agreement with the English, occupied Paris. One year later he was murdered by his Armagnac opponents on the bridge at Montereau. His son Philip the Good formed an alliance with the English and negotiated the treaty with the English King.

Isabeau of Bavaria, Charles VI's queen, whose participation in the negotiations was merely formal, agreed to the treaty disinheriting her son, hoping that if the dynasties were joined through Henry V the war could be ended and leave France in the hands of a vigorous and able king.

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