End of the War of the Champagne Succession

Timeline

1. 1221–1222County of Champagne · Grand EstAfter years of war and with the support of the pope, King Philip II of France, and the Duke of Burgundy, regent Blanche of Navarre gradually suppressed the rebellious barons. On November 2, 1221, Erard of Brienne renounced all rights to Champagne, and in April 1222 Philippa of Champagne also formally renounced her claims. As compensation, Theobald IV was to pay Erard a large sum of money, and Philippa received an annuity but no territorial jurisdiction.
2. 1222Champagne–Lorraine border · Grand EstIn March 1222 the last rebellious baron, Erard of Chacenay, again swore fealty to Theobald IV. In May Theobald turned 21 and formally assumed rule; the war, which had arisen over the issue of an underage heir, now had the legal conditions for its conclusion with his coming of age. Regent Blanche reconciled with Duke Matthew II of Lorraine, and Theobald married Gertrude of Dagsburg, widow of the former Duke of Lorraine, to consolidate the eastern frontier.
3. 1222Melun · Île-de-FranceIn August 1222 the Treaty of Melun was signed under the mediation of the abbot of Saint-Denis: Erard received an indemnity of 20,000 livres and kept his ancestral lands, rebellious barons submitting within forty days could be pardoned, and Theobald promised to promulgate the Customs of Champagne to safeguard baronial privileges. The treaty was ratified at Reims Cathedral under the archbishop's witness. After completing her regency, Blanche of Navarre retired to the Cistercian abbey of Argensolles, and the County of Champagne achieved centralization of power under Capetian influence.