Treaty of Vendome was the peace agreement reached between Queen Blanche of France and the rebellious nobles, led by Peter Mauclerc, Hugh X of Lusignan and later Philip Hurepel.
In 1223, Louis VIII succeeded his father Phillip II as king of France. Louis, however, died three years later leaving a 12 year old son, Louis IX, as king. Sensing a weakening of royal power and not willing to recognize Queen Blanche as regent, the barons rebelled.