The war did not end with Montfort's death, and Edward continued campaigning. At Christmas, he came to terms with the younger Simon de Montfort and his associates at the Isle of Axholme in Lincolnshire. In March he led a successful assault on the Cinque Ports. A contingent of rebels held out in the virtually impregnable Kenilworth Castle and did not surrender until the drafting of the conciliatory Dictum of Kenilworth. In April it seemed as if Gloucester would take up the cause of the reform movement, and civil war would resume, but after a renegotiation of the terms of the Dictum of Kenilworth, the parties came an agreement. Edward, however, was little involved in the settlement negotiations following the wars; at this point his main focus was on planning his upcoming crusade.