This Day in History: 1263-10-03

In early October 1263, John de Warenne, 6th Earl of Surrey and lord of Sandal, along with Henry of Almain, the Earl of Norfolk and his brother, Hugh Bigod, and many Marcher lords, deserted Simon de Montfort and rejoined the court party of Henry III at Windsor Castle. After the king’s proclamation that summer that he would observe the Provisions of Oxford, de Montfort’s unworkable demand to expel all foreigners from England and refusal to allow any of his supporters to be brought to justice for that summer’s violence caused many of his supporters to drift away.